18251796981990

Names of 18251796981990

• Cardinal: 18251796981990 can be written as Eighteen trillion, two hundred fifty-one billion, seven hundred ninety-six million, nine hundred eighty-one thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.825179698199 × 10¹³

Factors of 18251796981990

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 124907

Divisors of 18251796981990

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 10 11 13 15 22 26 30 33 39 43 55 61 65 66 78 86 110 122 129 130 143 165 169 183 195 215 258 286 305 330 338 366 390 429 430 473 507 559 610 645 671 715 793 845 858 915 946 1014 1118 1290 1342 1419 1430 1586 1677 1690 1830 1859 2013 2145 2365 2379 2535 2623 2795 2838 3354 3355 3718 3965 4026 4290 4730 4758 5070 5246 5577 5590 6149 6710 7095 7267 7869 7930 8385 8723 9295 10065 10309 11154 11895 12298 13115 14190 14534 15738 16770 17446 18447 18590 20130 20618 21801 23790 26169 26230 27885 28853 30745 30927 34099 36335 36894 39345 43602 43615 51545 52338 55770 57706 61490 61854 68198 72670 78690 79937 86559 87230 92235 102297 103090 109005 113399 124769 130845 144265 154635 159874 170495 173118 184470 204594 218010 226798 239811 249538 261690 288530 309270 340197 340990 374307 375089 399685 432795 443287 479622 511485 566995 623845 680394 748614 750178 799370 865590 886574 1022970 1125267 1133990 1199055 1247690 1329861 1372459 1621997 1700985 1871535 1875445 2216435 2250534 2398110 2659722 2744918 3243994 3401970 3743070 3750890 4117377 4432870 4865991 4876157 5365067 5626335 6649305 6862295 7610909 8109985 8234754 9731982 9752314 10730134 11252670 13298610 13724590 14628471 15221818 16095201 16219970 17841967 20586885 21085961 22832727 24329955 24380785 26825335 29256942 32190402 35683934 38054545 41173770 42171922 45665454 48659910 48761570 53525901 53650670 59015737 63257883 69745871 73142355 76109090 80476005 83719999 89209835 98941817 105429805 107051802 114163635 118031474 126515766 139491742 146284710 160952010 167439998 177047211 178419670 197883634 209237613 210859610 228327270 231945571 251159997 267629505 295078685 296825451 316289415 327269087 348729355 354094422 418475226 418599995 463891142 494709085 502319994 535259010 590157370 593650902 632578830 654538174 695836713 697458710 767204581 837199990 885236055 906696323 981807261 989418170 1046188065 1088359987 1159727855 1255799985 1286243621 1391673426 1484127255 1534409162 1636345435 1770472110 1813392646 1963614522 2092376130 2176719974 2301613743 2319455710 2511599970 2572487242 2720088969 2968254510 3265079961 3272690870 3479183565 3599959957 3836022905 3858730863 4254498131 4533481615 4603227486 4909036305 5440177938 5441799935 6431218105 6530159922 6958367130 7199919914 7672045810 7717461726 8508996262 9066963230 9818072610 9973659553 10799879871 10883599870 11508068715 12763494393 12862436210 13600444845 14148679831 16325399805 17999799785 19293654315 19947319106 21272490655 21599759742 23016137430 25526988786 27200889690 28297359662 29920978659 32650799610 35999599570 38587308630 42446039493 42544981310 46799479441 49868297765 53999399355 55308475703 59841957318 63817471965 70743399155 84892078986 93598958882 99736595530 107998798710 110616951406 127634943930 140398438323 141486798310 149604893295 165925427109 212230197465 233997397205 276542378515 280796876646 299209786590 331850854218 424460394930 467994794410 553084757030 608393232733 701992191615 829627135545 1216786465466 1403984383230 1659254271090 1825179698199 3041966163665 3650359396398 6083932327330 9125898490995 18251796981990
• Sum of all divisors σ(n): 53816986206720
• Sum of proper divisors (its aliquot sum) s(n): 35565189224730
• 18251796981990 is an abundant number, because the sum of its proper divisors (35565189224730) is greater than itself. Its abundance is 17313392242740

Bases of 18251796981990

• Binary: 100001001100110010011111000000010100011100110₂
• Hexadecimal: 0x109993E028E6
• Base-36: 6GWRCOBMU

Squares and roots of 18251796981990

• 18251796981990 squared (18251796981990²) is 333128093071779272384360100
• 18251796981990 cubed (18251796981990³) is 6080186323743584752144301824457374599000
• The square root of 18251796981990 is 4272212.1883153229
• The cube root of 18251796981990 is 26329.0512454303

Scales and comparisons

• 18,251,796,981,990 seconds is equal to 580,350 years, 35 weeks, 5 days, 6 hours, 6 minutes, 30 seconds.
• To count from 1 to 18,251,796,981,990 would take you about one million, four hundred fifty thousand, eight hundred seventy-six 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 18251796981990 cubic inches would be around 2194.1 feet tall.

Recreational maths with 18251796981990

• 18251796981990 backwards is 09918969715281
• The number of decimal digits it has is: 14
• The sum of 18251796981990's digits is 75
• More coming soon!