18387712992

Names of 18387712992

• Cardinal: 18387712992 can be written as Eighteen billion, three hundred eighty-seven million, seven hundred twelve thousand, nine hundred ninety-two.

Scientific notation

• Scientific notation: 1.8387712992 × 10¹⁰

Factors of 18387712992

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 167

Divisors of 18387712992

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 6 8 11 12 16 17 19 22 24 31 32 33 34 37 38 44 47 48 51 57 62 66 68 74 76 88 93 94 96 102 111 114 124 132 136 141 148 152 176 186 187 188 204 209 222 228 248 264 272 282 296 304 323 341 352 372 374 376 407 408 418 444 456 496 517 527 528 544 561 564 589 592 608 627 629 646 682 703 744 748 752 799 814 816 836 888 893 912 969 992 1023 1034 1054 1056 1122 1128 1147 1178 1184 1221 1254 1258 1292 1364 1406 1457 1488 1496 1504 1551 1581 1598 1628 1632 1672 1739 1767 1776 1786 1824 1887 1938 2046 2068 2108 2109 2244 2256 2294 2356 2397 2442 2508 2516 2584 2679 2728 2812 2914 2976 2992 3102 3162 3196 3256 3344 3441 3478 3534 3552 3553 3572 3774 3876 4092 4136 4216 4218 4371 4488 4512 4588 4712 4794 4884 5016 5032 5168 5217 5358 5456 5624 5797 5828 5984 6204 6324 6392 6479 6512 6688 6882 6919 6956 7068 7106 7144 7548 7733 7752 8184 8272 8432 8436 8742 8789 8976 9176 9424 9588 9768 9823 10013 10032 10064 10336 10434 10659 10716 10912 11248 11594 11656 11951 12408 12617 12648 12784 12958 13024 13764 13838 13912 14136 14212 14288 15096 15181 15466 15504 16027 16368 16544 16864 16872 17391 17484 17578 17952 18352 18848 19129 19176 19437 19499 19536 19646 20026 20064 20128 20757 20868 21318 21432 21793 22496 23188 23199 23312 23902 24769 24816 25234 25296 25568 25916 26367 27528 27676 27683 27824 28272 28424 28576 29469 29563 30039 30192 30362 30932 31008 32054 32736 33041 33744 34782 34968 35156 35853 36704 37851 38258 38352 38874 38998 39072 39292 40052 41514 41736 42636 42864 43586 45543 46376 46398 46624 47804 48081 49538 49632 50468 50592 51832 52734 53909 55056 55352 55366 55648 56544 56848 57387 58497 58938 59126 60078 60384 60724 61864 64108 65379 66082 67488 69564 69936 70312 71706 74307 75702 76516 76704 77748 77996 78584 80104 83028 83049 83472 85272 85728 87172 88689 91086 92752 92796 95608 96162 99076 99123 100936 103664 105468 107818 110112 110143 110704 110732 113696 114774 116994 117876 118252 120156 121448 123728 128216 130758 131461 132164 139128 139872 140624 143412 148614 151404 153032 155496 155992 157168 160208 161727 166056 166098 166944 166991 170544 174344 177378 182172 185504 185592 191216 192324 198152 198246 201872 207328 210936 214489 215636 220286 221408 221464 229548 233988 235752 236504 239723 240312 242896 247456 256432 261516 262922 264328 272459 278256 281248 286824 297228 302808 304513 306064 310992 311984 314336 320416 323454 325193 330429 332112 332196 333982 341088 348688 354756 363451 364344 370481 371184 382432 384648 394383 396304 396492 403744 421872 428978 431272 440572 442928 459096 467976 470611 471504 473008 479446 480624 485792 500973 512864 523032 525844 528656 544918 556512 561697 573648 592999 594456 605616 609026 612128 621984 623968 643467 646908 650386 660858 664224 664392 667964 697376 709512 719169 726902 728688 740962 742368 769296 788766 792608 792984 817377 843744 857956 862544 881144 885856 913539 916453 918192 935952 941222 943008 946016 958892 961248 975579 1001946 1024271 1046064 1051688 1057312 1089836 1090353 1111443 1123394 1147296 1185998 1188912 1211232 1218052 1286934 1293816 1300772 1321716 1328784 1335928 1411833 1419024 1438338 1453804 1457376 1481924 1538592 1577532 1585968 1634754 1685091 1715912 1725088 1762288 1778997 1827078 1832906 1836384 1871904 1882444 1917784 1951158 2003892 2048542 2092128 2103376 2179672 2180706 2222886 2246788 2371996 2377824 2436104 2573868 2587632 2601544 2643432 2657568 2671856 2749359 2823666 2838048 2876676 2907608 2963848 3072813 3155064 3171936 3269508 3370182 3431824 3524576 3557994 3654156 3665812 3764888 3835568 3902316 4007784 4075291 4097084 4206752 4359344 4361412 4445772 4493576 4743992 4872208 5147736 5175264 5176721 5203088 5286864 5343712 5498718 5647332 5753352 5815216 5927696 6145626 6178667 6310128 6539016 6740364 6863648 7115988 7308312 7331624 7529776 7671136 7804632 8015568 8150582 8194168 8718688 8722824 8891544 8987152 9487984 9744416 10080983 10295472 10353442 10406176 10573728 10997436 11266981 11294664 11506704 11630432 11855392 12225873 12291252 12357334 12620256 13078032 13480728 14231976 14616624 14663248 15059552 15530163 15609264 16031136 16301164 16388336 17412607 17445648 17783088 17974304 18536001 18975968 20161966 20590944 20706884 21994872 22533962 22589328 23013408 24451746 24582504 24714668 26156064 26961456 28463952 29233248 29326496 30242949 31060326 31218528 32602328 32776672 33800943 34825214 34891296 35566176 37072002 40323932 41413768 43989744 45067924 45178656 48903492 49165008 49429336 52237821 53922912 56927904 60485898 62120652 65204656 67601886 69650428 74144004 80647864 82827536 87979488 90135848 97806984 98330016 98858672 104475642 120971796 124241304 130409312 135203772 139300856 148288008 161295728 165655072 180271696 191538677 195613968 197717344 208951284 241943592 248482608 270407544 278601712 296576016 322591456 360543392 383077354 391227936 417902568 483887184 496965216 540815088 557203424 574616031 593152032 766154708 835805136 967774368 1081630176 1149232062 1532309416 1671610272 2298464124 3064618832 4596928248 6129237664 9193856496 18387712992
• Sum of all divisors σ(n): 63541739520
• Sum of proper divisors (its aliquot sum) s(n): 45154026528
• 18387712992 is an abundant number, because the sum of its proper divisors (45154026528) is greater than itself. Its abundance is 26766313536

Bases of 18387712992

• Binary: 10001000111111111100011101111100000₂
• Hexadecimal: 0x447FE3BE0
• Base-36: 8G3KI5C

Squares and roots of 18387712992

• 18387712992 squared (18387712992²) is 338107989076165592064
• 18387712992 cubed (18387712992³) is 6217032663434804134738584895488
• The square root of 18387712992 is 135601.3015866735
• The cube root of 18387712992 is 2639.4244705011

Scales and comparisons

• 18,387,712,992 seconds is equal to 584 years, 34 weeks, 6 days, 18 hours, 3 minutes, 12 seconds.
• To count from 1 to 18,387,712,992 would take you about one thousand, one hundred sixty-nine years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 18387712992 cubic inches would be around 220 feet tall.

Recreational maths with 18387712992

• 18387712992 backwards is 29921778381
• 18387712992 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18387712992's digits is 57
• More coming soon!