18189121536

Names of 18189121536

• Cardinal: 18189121536 can be written as Eighteen billion, one hundred eighty-nine million, one hundred twenty-one thousand, five hundred thirty-six.

Scientific notation

• Scientific notation: 1.8189121536 × 10¹⁰

Factors of 18189121536

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 20
• Sum of prime factors: 167

Divisors of 18189121536

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 31 32 36 48 54 62 64 72 81 93 96 108 124 128 131 144 162 186 192 216 243 248 256 262 279 288 324 372 384 393 432 486 496 512 524 558 576 648 729 744 768 786 837 864 972 992 1024 1048 1116 1152 1179 1296 1458 1488 1536 1572 1674 1728 1944 1984 2048 2096 2187 2232 2304 2358 2511 2592 2916 2976 3072 3144 3348 3456 3537 3888 3968 4061 4192 4374 4464 4608 4716 5022 5184 5832 5952 6144 6288 6696 6912 7074 7533 7776 7936 8122 8384 8748 8928 9216 9432 10044 10368 10611 11664 11904 12183 12576 13392 13824 14148 15066 15552 15872 16244 16768 17496 17856 18432 18864 20088 20736 21222 22599 23328 23808 24366 25152 26784 27648 28296 30132 31104 31744 31833 32488 33536 34992 35712 36549 37728 40176 41472 42444 45198 46656 47616 48732 50304 53568 55296 56592 60264 62208 63488 63666 64976 67072 67797 69984 71424 73098 75456 80352 82944 84888 90396 93312 95232 95499 97464 100608 107136 109647 113184 120528 124416 127332 129952 134144 135594 139968 142848 146196 150912 160704 165888 169776 180792 186624 190464 190998 194928 201216 214272 219294 226368 241056 248832 254664 259904 268288 271188 279936 285696 286497 292392 301824 321408 328941 339552 361584 373248 381996 389856 402432 428544 438588 452736 482112 497664 509328 519808 542376 559872 571392 572994 584784 603648 642816 657882 679104 723168 746496 763992 779712 804864 857088 877176 905472 964224 986823 1018656 1039616 1084752 1119744 1145988 1169568 1207296 1285632 1315764 1358208 1446336 1492992 1527984 1559424 1714176 1754352 1810944 1928448 1973646 2037312 2079232 2169504 2239488 2291976 2339136 2414592 2571264 2631528 2716416 2892672 2960469 3055968 3118848 3508704 3621888 3856896 3947292 4074624 4158464 4339008 4478976 4583952 4678272 5142528 5263056 5432832 5785344 5920938 6111936 6237696 7017408 7243776 7713792 7894584 8149248 8316928 8678016 8881407 9167904 9356544 10526112 10865664 11570688 11841876 12223872 12475392 14034816 15427584 15789168 16298496 17356032 17762814 18335808 18713088 21052224 21731328 23141376 23683752 24447744 24950784 28069632 31578336 32596992 34712064 35525628 36671616 37426176 42104448 46282752 47367504 48895488 56139264 63156672 65193984 69424128 71051256 73343232 74852352 84208896 94735008 97790976 112278528 126313344 138848256 142102512 146686464 168417792 189470016 195581952 224557056 252626688 284205024 293372928 336835584 378940032 505253376 568410048 586745856 673671168 757880064 1010506752 1136820096 1515760128 2021013504 2273640192 3031520256 4547280384 6063040512 9094560768 18189121536
• Sum of all divisors σ(n): 56735078400
• Sum of proper divisors (its aliquot sum) s(n): 38545956864
• 18189121536 is an abundant number, because the sum of its proper divisors (38545956864) is greater than itself. Its abundance is 20356835328

Bases of 18189121536

• Binary: 10000111100001001111111100000000000₂
• Hexadecimal: 0x43C27F800
• Base-36: 8CTC000

Squares and roots of 18189121536

• 18189121536 squared (18189121536²) is 330844142251378999296
• 18189121536 cubed (18189121536³) is 6017764312884005281793002438656
• The square root of 18189121536 is 134867.0513357507
• The cube root of 18189121536 is 2629.8879284507

Scales and comparisons

• 18,189,121,536 seconds is equal to 578 years, 18 weeks, 4 days, 5 hours, 45 minutes, 36 seconds.
• To count from 1 to 18,189,121,536 would take you about one thousand, one hundred fifty-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 18189121536 cubic inches would be around 219.2 feet tall.

Recreational maths with 18189121536

• 18189121536 backwards is 63512198181
• The number of decimal digits it has is: 11
• The sum of 18189121536's digits is 45
• More coming soon!