18145621494

Names of 18145621494

• Cardinal: 18145621494 can be written as Eighteen billion, one hundred forty-five million, six hundred twenty-one thousand, four hundred ninety-four.

Scientific notation

• Scientific notation: 1.8145621494 × 10¹⁰

Factors of 18145621494

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 106

Divisors of 18145621494

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 6 7 9 11 13 14 18 21 22 26 29 33 39 41 42 49 58 63 66 77 78 82 87 91 98 99 117 121 123 126 143 147 154 174 182 198 203 231 234 242 246 261 273 286 287 294 319 363 369 377 406 429 441 451 462 522 533 539 546 574 609 637 638 693 726 738 754 819 847 858 861 882 902 957 1001 1066 1078 1089 1131 1189 1218 1274 1287 1331 1353 1386 1421 1573 1599 1617 1638 1694 1722 1827 1911 1914 2002 2009 2178 2233 2262 2378 2541 2574 2583 2639 2662 2706 2842 2871 3003 3146 3157 3198 3234 3393 3509 3567 3654 3731 3822 3993 4018 4059 4147 4263 4466 4719 4797 4851 4961 5082 5166 5278 5733 5742 5863 5929 6006 6027 6314 6699 6786 7007 7018 7134 7462 7623 7917 7986 8118 8294 8323 8526 9009 9317 9438 9471 9594 9702 9922 10527 10701 11011 11193 11466 11726 11858 11979 12054 12441 12789 13079 13398 14014 14157 14883 15246 15457 15631 15834 16646 17303 17589 17787 18018 18081 18473 18634 18942 20097 21021 21054 21402 22022 22099 22386 23751 23958 24563 24882 24969 25578 26117 26158 27951 28314 28413 29029 29766 30914 31262 31581 33033 33579 34606 34727 35178 35574 36162 36946 37323 38599 39237 40194 41041 42042 44198 44649 45617 46371 46893 47502 49126 49938 51909 52234 52767 53361 54571 55419 55902 56826 58058 58261 63063 63162 64493 65219 66066 66297 67158 69454 73689 74646 74907 77077 77198 78351 78474 82082 83853 87087 89298 91234 91553 92742 93786 99099 103818 104181 105534 106722 108199 109142 110838 115797 116522 117711 121121 123123 126126 128986 130438 132594 136851 139113 140679 143869 147378 149814 154154 155727 156702 163713 166257 167706 170027 171941 174174 174783 183106 193479 195657 198198 198891 203203 208362 216398 221067 231231 231594 235053 235422 242242 243089 246246 261261 270193 273702 274659 278226 281358 287287 287738 311454 312543 319319 324597 327426 332514 340054 343882 347391 349566 363363 369369 381997 386958 391314 397782 406406 410553 431607 442134 451451 462462 470106 486178 491139 501787 510081 515823 522522 524349 540386 549318 574574 580437 586971 609609 625086 638638 640871 649194 693693 694782 709423 726726 729267 738738 757393 763994 810579 821106 823977 847847 861861 863214 902902 957957 973791 982278 1003574 1007083 1020162 1031646 1048698 1090089 1145991 1160874 1173942 1190189 1219218 1281742 1294821 1354353 1387386 1418846 1458534 1505361 1514786 1530243 1547469 1582559 1621158 1647954 1695694 1723722 1828827 1870297 1891351 1915914 1922613 1947582 2014166 2128269 2180178 2187801 2235233 2272179 2291982 2380378 2431737 2543541 2585583 2589642 2673979 2708706 2873871 3010722 3021249 3060486 3094938 3160157 3165118 3437973 3512509 3570567 3657654 3740594 3782702 3845226 4063059 4256538 4375602 4470466 4516083 4544358 4747677 4863474 4965961 5087082 5171166 5347958 5610891 5674053 5747742 5767839 6042498 6320314 6384807 6705699 6816537 6875946 7025018 7049581 7141134 7630623 8021937 8126118 8331323 9032166 9063747 9480471 9495354 9931922 10537527 10711701 11077913 11221782 11348106 11535678 12769614 13092079 13411398 13633074 14099162 14243031 14897883 15261246 16043874 16662646 16832673 17022159 18127494 18960942 20117097 20573267 21075054 21148743 21423402 22155826 24065811 24587563 24993969 26184158 28441413 28486062 29795766 31612581 33233739 33665346 34044318 34761727 39276237 40234194 41146534 42297486 44693649 48131622 49175126 49987938 56882826 61719801 63225162 63446229 66467478 69523454 73762689 74981907 77545391 78552474 89387298 91644553 99701217 104285181 117828711 123439602 126892458 144012869 147525378 149963814 155090782 183289106 185159403 199402434 208570362 221288067 232636173 235657422 274933659 288025738 312855543 370318806 432038607 442576134 465272346 549867318 625711086 697908519 824800977 864077214 1008090083 1296115821 1395817038 1649601954 2016180166 2592231642 3024270249 6048540498 9072810747 18145621494
• Sum of all divisors σ(n): 57408886080
• Sum of proper divisors (its aliquot sum) s(n): 39263264586
• 18145621494 is an abundant number, because the sum of its proper divisors (39263264586) is greater than itself. Its abundance is 21117643092

Bases of 18145621494

• Binary: 10000111001100100000011010111110110₂
• Hexadecimal: 0x4399035F6
• Base-36: 8C3FN5I

Squares and roots of 18145621494

• 18145621494 squared (18145621494²) is 329263579403514792036
• 18145621494 cubed (18145621494³) is 5974692283615793709515381621784
• The square root of 18145621494 is 134705.6847130069
• The cube root of 18145621494 is 2627.7897594229

Scales and comparisons

• 18,145,621,494 seconds is equal to 576 years, 50 weeks, 4 days, 18 hours, 24 minutes, 54 seconds.
• To count from 1 to 18,145,621,494 would take you about one thousand, one hundred fifty-three 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 18145621494 cubic inches would be around 219 feet tall.

Recreational maths with 18145621494

• 18145621494 backwards is 49412654181
• The number of decimal digits it has is: 11
• The sum of 18145621494's digits is 45
• More coming soon!