18997697286685728

Names of 18997697286685728

• Cardinal: 18997697286685728 can be written as Eighteen quadrillion, nine hundred ninety-seven trillion, six hundred ninety-seven billion, two hundred eighty-six million, six hundred eighty-five thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8997697286685728 × 10¹⁶

Factors of 18997697286685728

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 16550161

Divisors of 18997697286685728

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 72 73 78 96 104 117 144 146 156 208 219 234 288 292 312 416 438 468 584 624 657 876 936 949 1168 1248 1314 1752 1872 1898 2336 2628 2847 3504 3744 3796 4201 5256 5694 7008 7592 8402 8541 10512 11388 12603 15184 16804 17082 21024 22776 25206 30368 33608 34164 37809 45552 50412 54613 67216 68328 75618 91104 100824 109226 134432 136656 151236 163839 201648 218452 273312 302472 306673 327678 403296 436904 491517 604944 613346 655356 873808 920019 983034 1209888 1226692 1310712 1747616 1840038 1966068 2453384 2621424 2760057 3680076 3932136 3986749 4906768 5242848 5520114 7360152 7864272 7973498 9813536 11040228 11960247 14720304 15728544 15946996 16545869 22080456 23920494 29440608 31893992 33091738 35880741 44160912 47840988 49637607 63787984 66183476 71761482 88321824 95681976 99275214 127575968 132366952 143522964 148912821 191363952 198550428 215096297 264733904 287045928 297825642 382727904 397100856 430192594 529467808 574091856 595651284 645288891 794201712 860385188 1148183712 1191302568 1207848437 1290577782 1588403424 1720770376 1935866673 2382605136 2415696874 2581155564 3441540752 3623545311 3871733346 4765210272 4831393748 5162311128 6883081504 7247090622 7743466692 9662787496 10324622256 10870635933 14494181244 15486933384 15702029681 19325574992 20649244512 21741271866 28988362488 30973866768 31404059362 38651149984 43482543732 47106089043 57976724976 61947733536 62808118724 69509195669 86965087464 94212178086 115953449952 125616237448 139018391338 141318267129 173930174928 188424356172 208527587007 251232474896 278036782676 282636534258 347860349856 376848712344 417055174014 502464949792 556073565352 565273068516 625582761021 753697424688 834110348028 903619543697 1112147130704 1130546137032 1251165522042 1507394849376 1668220696056 1807239087394 2224294261408 2261092274064 2502331044084 2710858631091 3336441392112 3614478174788 4522184548128 5004662088168 5074171283837 5421717262182 6672882784224 7228956349576 8132575893273 10009324176336 10148342567674 10843434524364 14457912699152 15222513851511 16265151786546 20018648352672 20296685135348 21686869048728 28915825398304 30445027703022 32530303573092 40593370270696 43373738097456 45667541554533 60890055406044 65060607146184 65964226689881 81186740541392 86747476194912 91335083109066 121780110812088 130121214292368 131928453379762 162373481082784 182670166218132 197892680069643 243560221624176 260242428584736 263856906759524 365340332436264 395785360139286 487120443248352 527713813519048 593678040208929 730680664872528 791570720278572 1055427627038096 1187356080417858 1461361329745056 1583141440557144 2110855254076192 2374712160835716 3166282881114288 4749424321671432 6332565762228576 9498848643342864 18997697286685728
• Sum of all divisors σ(n): 58991482848458160
• Sum of proper divisors (its aliquot sum) s(n): 39993785561772432
• 18997697286685728 is an abundant number, because the sum of its proper divisors (39993785561772432) is greater than itself. Its abundance is 20996088275086704

Bases of 18997697286685728

• Binary: 1000011011111100100111000010110010100101100010000100000₂
• Hexadecimal: 0x437E4E1652C420
• Base-36: 5724DNEHFS0

Squares and roots of 18997697286685728

• 18997697286685728 squared (18997697286685728²) is 360912502196546271725538638889984
• 18997697286685728 cubed (18997697286685728³) is 6856506463710283953239917218746193249152174948352
• The square root of 18997697286685728 is 137832134.4487044069
• The cube root of 18997697286685728 is 266829.3844998223

Scales and comparisons

• 18,997,697,286,685,728 seconds is equal to 604,068,009 years, 50 weeks, 6 days, 22 hours, 28 minutes, 48 seconds.
• To count from 1 to 18,997,697,286,685,728 would take you about one billion, eight hundred twelve million, two hundred four thousand and twenty-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 18997697286685728 cubic inches would be around 22235.8 feet tall.

Recreational maths with 18997697286685728

• 18997697286685728 backwards is 82758668279679981
• The number of decimal digits it has is: 17
• The sum of 18997697286685728's digits is 108
• More coming soon!