1981491315596667

Names of 1981491315596667

• Cardinal: 1981491315596667 can be written as One quadrillion, nine hundred eighty-one trillion, four hundred ninety-one billion, three hundred fifteen million, five hundred ninety-six thousand, six hundred sixty-seven.

Scientific notation

• Scientific notation: 1.981491315596667 × 10¹⁵

Factors of 1981491315596667

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 786

Divisors of 1981491315596667

• Number of divisors d(n): 294
• Complete list of divisors:
  1 3 7 9 21 27 43 49 63 81 129 147 189 243 301 343 387 441 567 729 733 903 1029 1161 1323 1701 2107 2199 2401 2709 3087 3483 3969 5103 5131 6321 6597 7203 8127 9261 10449 11907 14749 15393 16807 18963 19791 21609 24381 27783 31347 31519 35721 35917 44247 46179 50421 56889 59373 64827 73143 83349 94557 103243 107751 117649 132741 138537 151263 170667 178119 194481 219429 220633 250047 251419 283671 309729 323253 352947 398223 415611 453789 512001 534357 537289 583443 661899 722701 754257 851013 929187 969759 1058841 1194669 1246833 1361367 1536003 1544431 1611867 1750329 1759933 1985697 2168103 2262771 2553039 2787561 2909277 3176523 3584007 3740499 3761023 4084101 4633293 4835601 5058907 5279799 5957091 6504309 6788313 7659117 8362683 8727831 9529569 10752021 10811017 11283069 12252303 12319531 13899879 14506803 15176721 15839397 17871273 19512927 20364939 22977351 23103427 25088049 26183493 26327161 28588707 32433051 33849207 36958593 41699637 43520409 45530163 47518191 53613819 58538781 61094817 69310281 75264147 75677119 78981483 85766121 86236717 97299153 101547621 110875779 125098911 130561227 136590489 142554573 160841457 161723989 175616343 183284451 184290127 207930843 227031357 236944449 258710151 291897459 304642863 332627337 375296733 391683681 409771467 427663719 485171967 526849029 529739833 552870381 623792529 681094071 710833347 776130453 875692377 913928589 997882011 1125890199 1132067923 1229314401 1282991157 1290030889 1455515901 1589219499 1658611143 1871377587 2043282213 2132500041 2328391359 2627077131 2741785767 2993646033 3396203769 3687943203 3708178831 3870092667 4366547703 4767658497 4975833429 5614132761 6129846639 6397500123 6985174077 7881231393 7924475461 8980938099 9030216223 10188611307 11124536493 11610278001 13099643109 14302975491 14927500287 16842398283 18389539917 19192500369 20955522231 23773426383 27090648669 30565833921 33373609479 34830834003 39298929327 42908926473 44782500861 55168619751 55471328227 62866566693 63211513561 71320279149 81271946007 91697501763 100120828437 104492502009 117896787981 128726779419 134347502583 166413984681 189634540683 213960837447 243815838021 275092505289 300362485311 313477506027 386180338257 388299297589 499241954043 568903622049 641882512341 731447514063 825277515867 901087455933 940432518081 1164897892767 1497725862129 1706710866147 1925647537023 2194342542189 2703262367799 2718095083123 3494693678301 4493177586387 5120132598441 5776942611069 6583027626567 8154285249369 10484081034903 13479532759161 15360397795323 24462855748107 31452243104709 40438598277483 46081193385969 73388567244321 94356729314127 220165701732963 283070187942381 660497105198889 1981491315596667
• Sum of all divisors σ(n): 3551470262635812
• Sum of proper divisors (its aliquot sum) s(n): 1569978947039145
• 1981491315596667 is a deficient number, because the sum of its proper divisors (1569978947039145) is less than itself. Its deficiency is 411512368557522

Bases of 1981491315596667

• Binary: 111000010100010011111100101111111011101110101111011₂
• Hexadecimal: 0x70A27E5FDDD7B
• Base-36: JIDOJKPSOR

Squares and roots of 1981491315596667

• 1981491315596667 squared (1981491315596667²) is 3926307833785010182250221508889
• 1981491315596667 cubed (1981491315596667³) is 7779944875004159569576381747102441716079272963
• The square root of 1981491315596667 is 44513945.1812200869
• The cube root of 1981491315596667 is 125602.2418443047

Scales and comparisons

• 1,981,491,315,596,667 seconds is equal to 63,005,294 years, 35 weeks, 2 days, 20 hours, 24 minutes, 27 seconds.
• To count from 1 to 1,981,491,315,596,667 would take you about one hundred eighty-nine million, fifteen thousand, eight hundred eighty-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 1981491315596667 cubic inches would be around 10466.9 feet tall.

Recreational maths with 1981491315596667

• 1981491315596667 backwards is 7666955131941891
• 1981491315596667 is a Harshad number.
• The number of decimal digits it has is: 16
• The sum of 1981491315596667's digits is 81
• More coming soon!