1981721808517374027

Names of 1981721808517374027

• Cardinal: 1981721808517374027 can be written as One quintillion, nine hundred eighty-one quadrillion, seven hundred twenty-one trillion, eight hundred eight billion, five hundred seventeen million, three hundred seventy-four thousand and twenty-seven.

Scientific notation

• Scientific notation: 1.981721808517374027 × 10¹⁸

Factors of 1981721808517374027

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 23
• Sum of prime factors: 749

Divisors of 1981721808517374027

• Number of divisors d(n): 270
• Complete list of divisors:
  1 3 9 13 27 39 81 117 169 243 351 507 729 733 1053 1521 2187 2197 2199 3159 4563 6561 6591 6597 9477 9529 13689 19683 19773 19791 28431 28561 28587 41067 59049 59319 59373 85293 85683 85761 123201 123877 177147 177957 178119 255879 257049 257283 369603 371631 531441 533871 534357 537289 767637 771147 771849 1108809 1114893 1594323 1601613 1603071 1610401 1611867 2302911 2313441 2315547 3326427 3344679 4782969 4804839 4809213 4831203 4835601 6908733 6940323 6946641 6984757 9979281 10034037 14348907 14414517 14427639 14493609 14506803 20726199 20820969 20839923 20935213 20954271 29937843 30102111 43046721 43243551 43282917 43480827 43520409 62178597 62462907 62519769 62805639 62862813 89813529 90306333 90801841 129140163 129730653 129848751 130442481 130561227 186535791 187388721 187559307 188416917 188588439 269440587 270918999 272405523 389191959 389546253 391327443 391683681 559607373 562166163 562677921 565250751 565765317 808321761 812756997 817216569 1167575877 1168638759 1173982329 1175051043 1180423933 1678822119 1686498489 1688033763 1695752253 1697295951 2424965283 2438270991 2451649707 3502727631 3505916277 3521946987 3525153129 3541271799 5059495467 5064101289 5087256759 5091887853 7274895849 7314812973 7354949121 10508182893 10517748831 10565840961 10575459387 10623815397 15178486401 15192303867 15261770277 15275663559 15345511129 21824687547 21944438919 22064847363 31524548679 31553246493 31697522883 31726378161 31871446191 45535459203 45576911601 45785310831 45826990677 46036533387 65833316757 66194542089 94573646037 94659739479 95092568649 95179134483 95614338573 136606377609 136730734803 137355932493 137480972031 138109600161 197499950271 198583626267 283720938111 285277705947 285537403449 286843015719 409819132827 410192204409 412067797479 412442916093 414328800483 592499850813 595750878801 855833117841 856612210347 860529047157 1229457398481 1230576613227 1236203392437 1237328748279 1242986401449 1777499552439 1787252636403 2567499353523 2569836631041 2581587141471 3688372195443 3708610177311 3711986244837 3728959204347 5332498657317 5361757909209 7702498060569 7709509893123 7744761424413 11125830531933 11135958734511 11186877613041 15997495971951 16085273727627 23107494181707 23128529679369 23234284273239 33377491595799 33407876203533 33560632839123 48255821182881 69322482545121 69385589038107 69702852819717 100132474787397 100223628610599 100681898517369 144767463548643 207967447635363 209108558459151 300397424362191 300670885831797 302045695552107 434302390645929 627325675377453 901192273086573 902012657495391 906137086656321 1302907171937787 1881977026132359 2703576819259719 2718411259968963 3908721515813361 5645931078397077 8155233779906889 11726164547440083 16937793235191231 24465701339720667 50813379705573693 73397104019162001 152440139116721079 220191312057486003 660573936172458009 1981721808517374027
• Sum of all divisors σ(n): 3224688551406122892
• Sum of proper divisors (its aliquot sum) s(n): 1242966742888748865
• 1981721808517374027 is a deficient number, because the sum of its proper divisors (1242966742888748865) is less than itself. Its deficiency is 738755065628625162

Bases of 1981721808517374027

• Binary: 1101110000000011111010111110000111000010100101010000001001011₂
• Hexadecimal: 0x1B807D7C3852A04B
• Base-36: F20TR2QYF1OR

Squares and roots of 1981721808517374027

• 1981721808517374027 squared (1981721808517374027²) is 3927221326353371648665037515814196729
• 1981721808517374027 cubed (1981721808517374027³) is 7782660149309004023024144047124598167524433177452957683
• The square root of 1981721808517374027 is 1407736413.0111055797
• The cube root of 1981721808517374027 is 1256071.1179669549

Scales and comparisons

• 1,981,721,808,517,374,027 seconds is equal to 63,012,623,642 years, 42 weeks, 6 days, 3 hours, 27 seconds.
• To count from 1 to 1,981,721,808,517,374,027 would take you about two hundred twenty billion, five hundred forty-four million, one hundred eighty-two thousand, seven hundred forty-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 1981721808517374027 cubic inches would be around 104672.6 feet tall.

Recreational maths with 1981721808517374027

• 1981721808517374027 backwards is 7204737158081271891
• 1981721808517374027 is a Harshad number.
• The number of decimal digits it has is: 19
• The sum of 1981721808517374027's digits is 81
• More coming soon!