18387218197394919

Names of 18387218197394919

• Cardinal: 18387218197394919 can be written as Eighteen quadrillion, three hundred eighty-seven trillion, two hundred eighteen billion, one hundred ninety-seven million, three hundred ninety-four thousand, nine hundred nineteen.

Scientific notation

• Scientific notation: 1.8387218197394919 × 10¹⁶

Factors of 18387218197394919

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 475

Divisors of 18387218197394919

• Number of divisors d(n): 384
• Complete list of divisors:
  1 3 9 23 27 59 69 81 107 177 207 243 283 321 529 531 621 849 963 1357 1587 1593 1863 2461 2547 2889 3481 4071 4761 4779 5589 6313 6509 7383 7641 8667 10443 12167 12213 14283 14337 16697 18939 19527 22149 22923 26001 30281 31211 31329 36501 36639 42849 50091 56603 56817 58581 66447 68769 80063 90843 93633 93987 109503 109917 128547 145199 149707 150273 169809 170451 175743 199341 205379 240189 272529 280899 281961 328509 329751 372467 384031 435597 449121 450819 509427 511353 527229 598023 616137 696463 717853 720567 817587 842697 845883 985123 985527 1117401 1152093 1301869 1306791 1347363 1352457 1528281 1534059 1581687 1786579 1841449 1848411 2089389 2153559 2161701 2452761 2528091 2955369 2956581 3339577 3352203 3443261 3456279 3905607 3920373 4042089 4057371 4584843 4723717 5359737 5524347 5545233 6268167 6460677 6485103 7358283 7584273 8566741 8832713 8866107 10018731 10056609 10329783 10368837 11716821 11761119 12126267 13754529 14171151 16018649 16079211 16573041 16635699 18804501 19382031 19455309 21975553 22657829 25700223 26498139 26598321 30056193 30169827 30989349 31106511 35150463 35283357 36378801 41091317 42353327 42513453 48055947 48237633 49719123 49907097 56413503 58122257 58146093 65926659 67973487 76810271 77100669 79494417 79794963 90168579 90509481 92968047 93319533 105408161 105451389 108645491 123273951 127059981 127540359 144167841 144712899 149157369 169240509 174366771 174438279 197035043 197779977 203152399 203920461 230430813 231302007 238483251 239384889 270505737 278904141 316224483 316354167 325936473 368428927 369821853 381179943 382621077 432503523 434138697 447472107 505437719 521130067 523100313 591105129 593339931 609457197 611761383 691292439 693906021 715449753 811517211 836712423 945100291 948673449 977809419 1105286781 1109465559 1143539829 1147863231 1297510569 1336811911 1516313157 1563390201 1569300939 1773315387 1780019793 1828371591 1835284149 2073877317 2081718063 2146349259 2424387703 2498846293 2835300873 2846020347 2933428257 3315860343 3328396677 3430619487 3892531707 4010435733 4531805989 4548939471 4690170603 4707902817 5319946161 5340059379 5485114773 5505852447 6219081499 6221631951 7273163109 7496538879 8505902619 8538061041 8800284771 9947581029 9985190031 10291858461 11625067537 11985991541 12031307199 13595417967 13646818413 14070511809 14123708451 15959838483 16455344319 18657244497 18664895853 21737306693 21819489327 22489616637 25517707857 25614183123 26400854313 29842743087 30746673953 34875202611 35957974623 36093921597 40786253901 40940455239 42211535427 47879515449 49366032957 55760917169 55971733491 65211920079 65458467981 67468849911 76553123571 89528229261 92240021859 104625607833 107873923869 108281764791 122358761703 122821365717 126634606281 143038874477 167282751507 167915200473 195635760237 196375403943 202406549733 229659370713 267376553351 276720065577 313876823499 323621771607 324845294373 367076285109 429116623431 501848254521 503745601419 586907280711 589126211829 607219649199 707173500919 802129660053 830160196731 941630470497 970865314821 1101228855327 1282501094887 1287349870293 1505544763563 1511236804257 1760721842133 2121520502757 2406388980159 2490480590193 2824891411491 2912595944463 3289894112971 3847503284661 3862049610879 4516634290689 5282165526399 6364561508271 7219166940477 7471441770579 9869682338913 11542509853983 11586148832637 13549902872067 19093684524813 21657500821431 29609047016739 34627529561949 34758446497911 57281053574439 64972502464293 75667564598333 88827141050217 103882588685847 171843160723317 227002693794999 266481423150651 311647766057541 681008081384997 799444269451953 2043024244154991 6129072732464973 18387218197394919
• Sum of all divisors σ(n): 29669525970739200
• Sum of proper divisors (its aliquot sum) s(n): 11282307773344281
• 18387218197394919 is a deficient number, because the sum of its proper divisors (11282307773344281) is less than itself. Its deficiency is 7104910424050638

Bases of 18387218197394919

• Binary: 1000001010100110001001111011001000100000011010111100111₂
• Hexadecimal: 0x415313D91035E7
• Base-36: 511Q3FETNFR

Squares and roots of 18387218197394919

• 18387218197394919 squared (18387218197394919²) is 338089793038610854455438047016561
• 18387218197394919 cubed (18387218197394919³) is 6216530794913027509621764143739739117650250253559
• The square root of 18387218197394919 is 135599477.1280292181
• The cube root of 18387218197394919 is 263940.0795548571

Scales and comparisons

• 18,387,218,197,394,919 seconds is equal to 584,656,663 years, 14 weeks, 2 days, 19 hours, 28 minutes, 39 seconds.
• To count from 1 to 18,387,218,197,394,919 would take you about one billion, seven hundred fifty-three million, nine hundred sixty-nine thousand, nine hundred eighty-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 18387218197394919 cubic inches would be around 21995 feet tall.

Recreational maths with 18387218197394919

• 18387218197394919 backwards is 91949379181278381
• The number of decimal digits it has is: 17
• The sum of 18387218197394919's digits is 90
• More coming soon!