18519851988

Names of 18519851988

• Cardinal: 18519851988 can be written as Eighteen billion, five hundred nineteen million, eight hundred fifty-one thousand, nine hundred eighty-eight.

Scientific notation

• Scientific notation: 1.8519851988 × 10¹⁰

Factors of 18519851988

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 105

Divisors of 18519851988

• Number of divisors d(n): 540
• Complete list of divisors:
  1 2 3 4 6 9 11 12 18 19 22 23 27 33 36 38 44 46 47 54 57 66 69 76 81 92 94 99 108 114 121 132 138 141 162 171 188 198 207 209 228 242 253 276 282 297 324 342 363 396 414 418 423 437 484 506 513 517 529 564 594 621 627 684 726 759 828 836 846 874 891 893 1012 1026 1034 1058 1081 1089 1188 1242 1254 1269 1311 1452 1518 1539 1551 1587 1692 1748 1782 1786 1863 1881 2052 2068 2116 2162 2178 2277 2299 2484 2508 2538 2622 2679 2783 3036 3078 3102 3174 3243 3267 3564 3572 3726 3762 3807 3933 4324 4356 4554 4598 4653 4761 4807 5076 5244 5358 5566 5643 5687 5819 6156 6204 6348 6486 6534 6831 6897 7452 7524 7614 7866 8037 8349 9108 9196 9306 9522 9614 9729 9801 9823 10051 10716 11132 11286 11374 11638 11799 11891 12972 13068 13662 13794 13959 14283 14421 15228 15732 16074 16698 16929 17061 17457 18612 19044 19228 19458 19602 19646 20102 20493 20539 20691 22572 22748 23276 23598 23782 24111 24863 25047 27324 27588 27918 28566 28842 29187 29469 30153 32148 33396 33858 34122 34914 35397 35673 38916 39204 39292 40204 40986 41078 41382 41877 42849 43263 47196 47564 48222 49726 50094 51183 52371 52877 55836 57132 57684 58374 58938 60306 61617 62073 64009 67716 68244 69828 70794 71346 72333 74589 75141 81972 82156 82764 83754 85698 86526 87561 88407 90459 96444 99452 100188 102366 104742 105754 107019 108053 110561 116748 117876 120612 123234 124146 128018 129789 130801 141588 142692 144666 149178 150282 153549 157113 158631 167508 171396 173052 175122 176814 180918 184851 186219 192027 204732 209484 211508 214038 216106 221122 223767 225423 225929 246468 248292 256036 259578 261602 265221 271377 273493 289332 298356 300564 307098 314226 317262 321057 324159 331683 350244 353628 361836 369702 372438 384054 389367 392403 428076 432212 442244 447534 450846 451858 460647 471339 472397 475893 519156 523204 530442 542754 546986 554553 576081 614196 628452 634524 642114 648318 663366 671301 677787 739404 744876 768108 778734 784806 795663 814131 820479 895068 901692 903716 921294 942678 944794 951786 963171 972477 995049 1060884 1085508 1093972 1109106 1152162 1177209 1216171 1284228 1296636 1326732 1342602 1355574 1417191 1427679 1557468 1569612 1591326 1628262 1640958 1663659 1728243 1842588 1885356 1889588 1903572 1926342 1944954 1990098 2013903 2033361 2218212 2304324 2354418 2432342 2461437 2485219 2685204 2711148 2834382 2855358 2917431 2985147 3008423 3182652 3256524 3281916 3327318 3456486 3531627 3648513 3852684 3889908 3980196 4027806 4066722 4251573 4283037 4708836 4864684 4922874 4970438 5184729 5196367 5668764 5710716 5834862 5970294 6016846 6100083 6654636 6912972 7063254 7297026 7384311 7455657 8055612 8133444 8503146 8566074 8752293 8955441 9025269 9845748 9940876 10369458 10392734 10594881 10945539 11669724 11940588 12033692 12200166 12754719 14126508 14594052 14768622 14911314 15589101 17006292 17132148 17504586 17910882 18050538 18300249 20738916 20785468 21189762 21891078 22152933 22366971 24400332 25509438 27075807 29537244 29822628 31178202 32836617 35009172 35821764 36101076 36600498 38264157 42379524 43782156 44305866 44733942 46767303 51018876 54151614 57160037 62356404 65673234 67100913 73200996 76528314 81227421 88611732 89467884 93534606 98509851 108303228 114320074 131346468 134201826 140301909 153056628 162454842 171480111 187069212 197019702 201302739 228640148 243682263 268403652 280603818 324909684 342960222 394039404 402605478 420905727 487364526 514440333 561207636 685920444 805210956 841811454 974729052 1028880666 1543320999 1683622908 2057761332 3086641998 4629962997 6173283996 9259925994 18519851988
• Sum of all divisors σ(n): 59804162880
• Sum of proper divisors (its aliquot sum) s(n): 41284310892
• 18519851988 is an abundant number, because the sum of its proper divisors (41284310892) is greater than itself. Its abundance is 22764458904

Bases of 18519851988

• Binary: 10001001111110111101000001111010100₂
• Hexadecimal: 0x44FDE83D4
• Base-36: 8IA8P90

Squares and roots of 18519851988

• 18519851988 squared (18519851988²) is 342984917657427552144
• 18519851988 cubed (18519851988³) is 6352029909131925954540032062272
• The square root of 18519851988 is 136087.6628794837
• The cube root of 18519851988 is 2645.7319209485

Scales and comparisons

• 18,519,851,988 seconds is equal to 588 years, 45 weeks, 3 days, 3 hours, 19 minutes, 48 seconds.
• To count from 1 to 18,519,851,988 would take you about one thousand, one hundred seventy-seven 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 18519851988 cubic inches would be around 220.5 feet tall.

Recreational maths with 18519851988

• 18519851988 backwards is 88915891581
• The number of decimal digits it has is: 11
• The sum of 18519851988's digits is 63
• More coming soon!