1,000,000,000


1,000,000,000 is the natural number following 999,999,999 and preceding 1,000,000,001. With a number, "billion" can be abbreviated as b, bil or bn.
In standard form, it is written as 1 × 109. The metric prefix giga indicates 1,000,000,000 times the base unit. Its symbol is G.
One billion years may be called an eon in astronomy or geology.
Previously in British English, the word "billion" referred exclusively to a million millions. However, this is not common anymore, and the word has been used to mean one thousand million for several decades.
The term milliard could also be used to refer to 1,000,000,000; whereas "milliard" is rarely used in English, variations on this name often appear in other languages.
In the Indian numbering system, it is known as 100 crore or 1 [Indian numbering system|].
1,000,000,000 is also the cube of 1000.
It is a common metric used in macroeconomics when describing national economies.

Sense of scale

The facts below give a sense of how large 1,000,000,000 is in the context of time according to current scientific evidence:

Time

Distance

  • 109 inches is, more than halfway around the world and thus sufficient to reach any point on the globe from any other point.
  • 109 metres is almost three times the distance from the Earth to the Moon.
  • 109 kilometres is over six times the distance from the Earth to the Sun.

Area

  • A billion square inches could make a square about one half mile on a side.
  • A bolt of finely woven 1000-TC bed sheet linen with a billion thread crossings would have an area of, comparable to the floor area of a motel unit.

Volume

  • There are one billion cubic millimetres in a cubic metre, and a billion cubic metres in a cubic kilometre.
  • A billion grains of table salt or granulated sugar would occupy a volume of about.
  • A billion cubic inches would be a volume comparable to a large commercial building slightly larger than a typical supermarket.

Weight

  • Any object that weighs would weigh about as much as 5,525 empty Boeing 747-400s.
  • A cube of iron that weighs would be on each side.

Products

Nature

Count

A is a cube; B consists of 1000 cubes the size of cube A, C consists of 1000 cubes the size of cube B; and D consists of 1000 cubes the size of cube C. Thus there are A-sized cubes in C; and 1,000,000,000 A-sized cubes in D.

Selected 10-digit numbers (1,000,000,000–9,999,999,999)

1,000,000,000 to 1,999,999,999

1,000,000,007 : smallest prime number with 10 digits.1,000,006,281 : smallest triangular number with 10 digits and the 44,721st triangular number.1,000,014,129 = 316232, the smallest ten-digit square.1,003,003,001 = 10013.1,026,753,849 = 320432, the smallest pandigital square in base 10.1,069,863,695 : number of square -matrices without zero rows and with exactly 9 entries equal to 11,073,741,824 = 327682 = 10243 = 645 = 326 = 810 = 415 = 2301,073,742,724 : Leyland number using 2 and 30 1,073,792,449 : Leyland number using 4 and 15 1,093,104,961 : number of rooted trimmed trees with 28 nodes1,096,671,326 : number of uniform rooted trees with 26 nodes1,104,891,746 : number of partially ordered set with 12 unlabeled elements1,111,111,111 : repunit.1,129,760,415 : 23rd Motzkin number.1,134,903,170 : 45th Fibonacci number.1,160,290,625 = 6551,162,261,467 = 3191,162,268,326 : Leyland number using 3 and 19 1,163,962,800 : smallest superabundant number that is not highly composite1,166,732,814 : number of signed trees with 17 nodes1,173,741,824 : Leyland number using 8 and 10 1,220,703,125 = 5131,221,074,418 : Leyland number using 5 and 13 1,252,332,576 = 6651,280,000,000 = 2071,291,467,969 = 359372 = 10893 = 3361,311,738,121 : 25th Pell number.1,350,125,107 = 6751,382,958,545 : 15th Bell number.1,392,251,012 : number of secondary structures of RNA molecules with 27 nucleotides1,405,695,061 : Markov prime.1,406,818,759 : 30th Wedderburn–Etherington number.1,421,542,641 : logarithmic number.1,453,933,568 = 6851,464,407,113 : number of series-reduced trees with 39 nodes1,475,789,056 = 384162 = 1964 = 1481,528,823,808 = 115231,533,776,805 : both pentagonal and triangular.1,544,804,416 = 393042 = 11563 = 3461,564,031,349 = 6951,606,879,040 : Dowling number1,631,432,881 = 403912, triangular number">Triangular number">triangular number1,673,196,525 : Least common multiple of the odd integers from 1 to 251,677,922,740 : number of series-reduced planted trees with 36 nodes1,680,700,000 = 7051,755,206,648 : coefficient of a ménage hit polynomial1,767,263,190 : The 19th Catalan number.1,787,109,376 : 1-automorphic number1,801,088,541 = 2171,804,229,351 = 7151,808,141,741 : number of partitions of 280 into divisors of 2801,808,676,326 : number of 38-bead necklaces where complements are equivalent1,836,311,903 : 46th Fibonacci number.1,838,265,625 = 428752 = 12253 = 3561,848,549,332 : number of partitions of 270 into divisors of 2701,857,283,156 : number of 37-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed1,882,341,361 : The smallest prime whose reversal is a square triangular number.1,921,525,212 : number of partitions of 264 into divisors of 2641,934,502,740 : number of parallelogram polyominoes with 27 cells.1,934,917,632 = 7251,977,326,743 = 7111,979,339,339 : largest right-truncatable prime in decimal, if 1 is considered to be a prime 1,996,813,914 : Leyland number using 7 and 11

2,000,000,000 to 2,999,999,999

2,023,443,032 : number of trees with 28 unlabeled nodes2,038,074,743 : 100,000,000th prime number2,062,142,876 : number of centered hydrocarbons with 30 carbon atoms2,073,071,593 = 7352,147,483,647 : 8th Mersenne prime, 3rd double Mersenne prime, and the largest signed 32-bit integer.2,147,483,648 = 2312,147,484,609 : Leyland number using 2 and 31 2,176,782,336 = 466562 = 12963 = 2164 = 366 = 6122,179,768,320 : Leyland number using 6 and 12 2,214,502,422 : 6th primary pseudoperfect number.2,219,006,624 = 7452,222,222,222 : repdigit2,276,423,485 : number of ways to partition and then partition each cell into subcells.2,357,947,691 = 13313 = 1192,373,046,875 = 7552,494,357,888 = 2272,521,008,887 : 4th Mills' prime 2,535,525,376 = 7652,562,890,625 = 506252 = 2254 = 1582,565,726,409 = 506532 = 13693 = 3762,573,571,875 = 55×772,695,730,992 : number of rooted trimmed trees with 29 nodes2,706,784,157 = 7752,870,671,950 : number of free 20-ominoes2,873,403,980 : number of uniform rooted trees with 27 nodes2,834,510,744 : number of nonequivalent dissections of a 22-gon into 19 polygons by non-intersecting diagonals up to rotation2,887,174,368 = 7852,971,215,073 : 11th Fibonacci prime and a Markov prime.

3,000,000,000 to 3,999,999,999

3,010,936,384 = 548722 = 14443 = 3863,077,056,399 = 7953,166,815,962 : 26th Pell number.3,192,727,797 : 24th Motzkin number.3,276,800,000 = 8053,323,236,238 : 31st Wedderburn–Etherington number.3,333,333,333 : repdigit3,404,825,447 = 2373,405,691,582 = CAFEBABE16; used as a magic debug value in programming.3,405,697,037 = CAFED00D16; used as a magic debug value in programming.3,461,824,644 : number of secondary structures of RNA molecules with 28 nucleotides3,486,784,401 = 590492 = 2434 = 815 = 910 = 3203,486,792,401 : Leyland number using 3 and 20 3,492,564,909 = 12+34+56+78+9103,518,743,761 = 593192 = 15213 = 3963,520,581,954 : number of series-reduced planted trees with 37 nodes3,524,337,980 : number of 39-bead necklaces where complements are equivalent3,616,828,364 : number of 38-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed3,663,002,302 : number of prime numbers having eleven digits3,697,909,056 : number of primitive polynomials of degree 37 over GF(2)3,707,398,432 = 8253,715,891,200 : double factorial of 203,735,928,559 = DEADBEEF16; used as a magic debug value in programming.3,735,929,054 = DEADC0DE16; used as a magic debug value in programming.3,939,040,643 = 835

4,000,000,000 to 4,999,999,999

4,096,000,000 = 640002 = 16003 = 4064,118,054,813 : number of primes under 10114,182,119,424 = 8454,294,967,291 : Largest prime 32-bit unsigned integer.4,294,967,295 : Maximum 32-bit unsigned integer, perfect totient number, product of all known Fermat primes through.4,294,967,296 = 655362 = 2564 = 168 = 416 = 2324,294,967,297 :, the first composite Fermat number.4,294,968,320 : Leyland number using 2 and 32 4,295,032,832 : Leyland number using 4 and 16 4,437,053,125 = 8554,444,444,444 : repdigit4,467,033,943 : number of parallelogram polyominoes with 28 cells.4,486,784,401 : Leyland number using 9 and 10 4,586,471,424 = 2474,704,270,176 = 8654,750,104,241 = 689212 = 16813 = 4164,807,526,976 : 48th Fibonacci number.4,822,382,628 : number of primitive polynomials of degree 38 over GF(2)4,984,209,207 : 875

5,000,000,000 to 5,999,999,999

5,159,780,352 = 17283 = 129 = 1,000,000,00012, or a great-great-great-gross 5,277,319,168 = 8855,345,531,935 : number of centered hydrocarbons with 31 carbon atoms5,354,228,880 : Least common multiple of the odd integers from 1 to 275,391,411,025 : smallest odd abundant number not divisible by 35,469,566,585 : number of trees with 29 unlabeled nodes5,489,031,744 = 740882 = 17643 = 4265,555,555,555 : repdigit5,584,059,449 = 8955,702,046,382 : number of signed trees with 18 nodes5,784,634,181 : 13th alternating factorial.5,904,900,000 = 905

6,000,000,000 to 6,999,999,999

6,103,515,625 = 781252 = 257 = 5146,104,053,449 : Leyland number using 5 and 14 6,210,001,000 : only self-descriptive number in base 10.6,227,020,800 = 13!6,240,321,451 = 9156,321,363,049 = 795072 = 18493 = 4366,469,693,230 : tenth primorial6,564,120,420 : The 20th Catalan number.6,590,815,232 = 9256,659,914,175 : number of unordered unlabeled rooted trimmed trees with 30 nodes6,666,666,666 : repdigit6,872,485,104 : number of 40-bead necklaces where complements are equivalent6,956,883,693 = 9356,975,757,441 = 835212 = 2894 = 1786,983,776,800 : 15th colossally abundant number, 15th highly composite number">Highly composite number">highly composite number, and the largest number to be both.

7,000,000,000 to 7,999,999,999

7,048,151,672 : number of 39-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed7,256,313,856 = 851842 = 19363 = 4467,339,040,224 = 9457,371,308,068 : number of partitions of 252 into divisors of 2527,391,026,522 : number of planar partitions of 497,395,528,814 : number of series-reduced planted trees with 38 nodes7,544,428,973 : number of uniform rooted trees with 28 nodes7,645,370,045 : 27th Pell number.7,737,809,375 = 9557,777,777,777 : repdigit7,778,742,049 : 49th Fibonacci number.7,862,958,391 : 32nd Wedderburn–Etherington number.

8,000,000,000 to 8,999,999,999

8,031,810,176 = 2678,153,726,976 = 9658,212,890,625 : 1-automorphic number8,303,765,625 = 911252 = 20253 = 4568,549,176,320 : pandigital number with the digits arranged in alphabetical order by English name8,587,340,257 = 9758,589,866,963 : number of subsets of with relatively prime elements8,589,869,056 : 6th perfect number.8,589,934,592 = 20483 = 811 = 2338,589,935,681 : Leyland prime using 2 and 33 8,622,571,758 : number of secondary structures of RNA molecules with 29 nucleotides8,804,293,473 : Leyland number using 8 and 11 8,888,888,888 : repdigit

9,000,000,000 to 9,999,999,999

9,039,207,968 = 9859,043,402,501 : 25th Motzkin number.9,393,931,000 = 211039,474,296,896 = 973362 = 21163 = 4669,509,900,499 = 9959,814,072,356 = 990662, the largest pandigital square, largest pandigital pure power.9,876,543,210 : largest pandigital number.9,999,800,001 = 999992, the largest ten-digit square.9,999,999,967 : greatest prime number with 10 digits9,999,999,999 : largest 10-digit number, repdigit