18949473881927421

Names of 18949473881927421

• Cardinal: 18949473881927421 can be written as Eighteen quadrillion, nine hundred forty-nine trillion, four hundred seventy-three billion, eight hundred eighty-one million, nine hundred twenty-seven thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 1.8949473881927421 × 10¹⁶

Factors of 18949473881927421

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 387

Divisors of 18949473881927421

• Number of divisors d(n): 288
• Complete list of divisors:
  1 3 7 19 21 49 57 89 133 147 267 269 343 361 399 623 807 931 1029 1083 1691 1869 1883 2527 2793 4361 5073 5111 5649 6517 7581 7921 11837 13083 13181 15333 17689 19551 23763 23941 30527 32129 35511 35777 39543 53067 55447 71823 72361 82859 91581 92267 96387 97109 107331 123823 150499 166341 167587 217083 224903 248577 250439 276801 291327 371469 388129 451497 454879 502761 506527 580013 674709 679763 704969 751317 1053493 1164387 1173109 1364637 1374859 1519581 1574321 1740039 1753073 2039289 2114907 2130749 2716903 2859481 3160479 3184153 3519327 3545689 4124577 4722963 4758341 4934783 5259219 6392247 6440129 7374451 8150709 8211763 8578443 8642701 9552459 9624013 10637067 11020247 13394411 14275023 14804349 14915243 19320387 20016367 22123353 22289071 24635289 24819823 25928103 26122321 28872039 33060741 33308387 34543481 40183233 40484231 44745729 45080903 51621157 60049101 60498907 66867213 67368091 74459469 78366963 93760877 99925161 103630443 104406701 121452693 122362451 135242709 140114569 154863471 156023497 181496721 182856247 189636661 202104273 241804367 254493809 281282631 283389617 313220103 315566321 367087353 420343707 423492349 468070491 471576637 548568741 568909983 573171481 656326139 725413101 730846907 763481427 769200389 850168851 856537157 946698963 980801983 1270477047 1279993729 1327456627 1414729911 1719514443 1781456663 1968978417 1983727319 2192540721 2208964247 2307601167 2324886569 2569611471 2942405949 2964446443 3603096559 3839981187 3982369881 4012200367 4594282973 5344369989 5384402723 5951181957 5995760099 6626892741 6974659707 8893339329 8959956103 9292196389 10809289677 10890258139 12036601101 12470196641 13782848919 13886091233 16153208169 16274205983 17987280297 25221675913 26879868309 27876589167 28085402569 32670774417 37410589923 37690819061 41658273699 41970320693 48822617949 51012261809 65045374723 68458834621 75665027739 76231806973 84256207707 87291376487 113072457183 113919441881 125910962079 153036785427 176551731391 195136124169 196597817983 205376503863 206914904641 228695420919 261874129461 263835733427 341758325643 357085832663 479211842347 529655194173 533622648811 589793453949 620744713923 791507200281 797436093167 969232974371 1071257497989 1235862119737 1437635527041 1448404332487 1600867946433 2392308279501 2499600828641 2907698923113 3354482896429 3707586359211 3735358541677 4345212997461 6784630820597 7498802485923 10063448689287 10138830327409 11206075625031 17497205800487 18415426513049 20353892461791 23481380275003 30416490982227 47492415744179 52491617401461 55246279539147 70444140825009 70971812291863 128907985591343 142477247232537 212915436875589 332446910209253 386723956774029 902355899139401 997340730627759 2707067697418203 6316491293975807 18949473881927421
• Sum of all divisors σ(n): 31567800951648000
• Sum of proper divisors (its aliquot sum) s(n): 12618327069720579
• 18949473881927421 is a deficient number, because the sum of its proper divisors (12618327069720579) is less than itself. Its deficiency is 6331146812206842

Bases of 18949473881927421

• Binary: 1000011010100100111001000110011011010011010111011111101₂
• Hexadecimal: 0x4352723369AEFD
• Base-36: 56L104GDRZX

Squares and roots of 18949473881927421

• 18949473881927421 squared (18949473881927421²) is 359082560401849482194241911711241
• 18949473881927421 cubed (18949473881927421³) is 6804425599790472334183605323193735371597471839461
• The square root of 18949473881927421 is 137657088.0192059745
• The cube root of 18949473881927421 is 266603.4216007297

Scales and comparisons

• 18,949,473,881,927,421 seconds is equal to 602,534,654 years, 45 weeks, 3 days, 3 hours, 50 minutes, 21 seconds.
• To count from 1 to 18,949,473,881,927,421 would take you about one billion, eight hundred seven million, six hundred three thousand, nine hundred sixty-four 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 18949473881927421 cubic inches would be around 22217 feet tall.

Recreational maths with 18949473881927421

• 18949473881927421 backwards is 12472918837494981
• The number of decimal digits it has is: 17
• The sum of 18949473881927421's digits is 87
• More coming soon!