1991365446634788

Names of 1991365446634788

• Cardinal: 1991365446634788 can be written as One quadrillion, nine hundred ninety-one trillion, three hundred sixty-five billion, four hundred forty-six million, six hundred thirty-four thousand, seven hundred eighty-eight.

Scientific notation

• Scientific notation: 1.991365446634788 × 10¹⁵

Factors of 1991365446634788

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 646

Divisors of 1991365446634788

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 12 14 21 28 42 49 71 84 98 142 147 196 213 284 294 343 426 497 563 588 686 852 994 1029 1126 1372 1491 1689 1988 2058 2252 2401 2982 3378 3479 3941 4116 4802 5041 5964 6756 6958 7203 7882 9604 10082 10437 11823 13916 14406 15123 15764 16807 20164 20874 23646 24353 27587 28812 30246 33614 35287 39973 41748 47292 48706 50421 55174 60492 67228 70574 73059 79946 82761 97412 100842 105861 110348 117649 119919 141148 146118 159892 165522 170471 193109 201684 211722 235298 239838 247009 279811 292236 331044 340942 352947 357911 386218 423444 470596 479676 494018 511413 559622 579327 681884 705894 715822 741027 772436 823543 839433 988036 1022826 1073733 1119244 1158654 1193297 1351763 1411788 1431644 1482054 1647086 1678866 1729063 1958677 2045652 2147466 2317308 2386594 2470629 2505377 2703526 2838083 2964108 3294172 3357732 3458126 3579891 3917354 4055289 4294932 4773188 4941258 5010754 5187189 5407052 5676166 5876031 6916252 7159782 7516131 7834708 8110578 8353079 8514249 9462341 9882516 10021508 10374378 11352332 11752062 12103441 13710739 14319564 15032262 16221156 16706158 17028498 17537639 18924682 19866581 20748756 23504124 24206882 25059237 27421478 28387023 30064524 33412316 34056996 35075278 36310323 37849364 39733162 41132217 48413764 50118474 52612917 54842956 56774046 58471553 59599743 66236387 70150556 72620646 79466324 82264434 84724087 95975173 100236948 105225834 113548092 116943106 119199486 122763473 132472774 139066067 145241292 164528868 169448174 175414659 191950346 198709161 201503893 210451668 233886212 238398972 245526946 254172261 264945548 278132134 287925519 338896348 350829318 368290419 383900692 397418322 403007786 417198201 463654709 491053892 508344522 556264268 575851038 593068609 604511679 671826211 701658636 736580838 794836644 806015572 834396402 859344311 927309418 973462469 1016689044 1151702076 1186137218 1209023358 1343652422 1390964127 1410527251 1473161676 1668792804 1718688622 1779205827 1854618836 1946924938 2015478633 2372274436 2418046716 2578032933 2687304844 2781928254 2821054502 2920387407 3437377244 3558411654 3893849876 4030957266 4151480263 4231581753 4702783477 5156065866 5563856508 5642109004 5840774814 6015410177 6814237283 7116823308 8061914532 8302960526 8463163506 9405566954 9873690757 10312131732 11681549628 12030820354 12454440789 13628474566 14108350431 16605921052 16926327012 18046230531 18811133908 19747381514 20442711849 24061640708 24908881578 27256949132 28216700862 29621072271 32919484339 36092461062 39494763028 40885423698 42107871239 47699660981 49817763156 56433401724 59242144542 65838968678 69115835299 72184922124 81770847396 84215742478 95399321962 98758453017 118484289084 126323613717 131677937356 138231670598 143098982943 168431484956 190798643924 197516906034 207347505897 252647227434 276463341196 286197965886 294755098673 333897626867 395033812068 414695011794 483810847093 505294454868 572395931772 589510197346 667795253734 829390023588 884265296019 967621694186 1001692880601 1179020394692 1335590507468 1451432541279 1768530592038 1935243388372 2003385761202 2337283388069 2902865082558 3386675929651 3537061184076 4006771522404 4674566776138 5805730165116 6773351859302 7011850164207 9349133552276 10160027788953 13546703718604 14023700328414 20320055577906 23706731507557 28047400656828 40640111155812 47413463015114 71120194522671 94826926030228 142240389045342 165947120552899 284480778090684 331894241105798 497841361658697 663788482211596 995682723317394 1991365446634788
• Sum of all divisors σ(n): 5508146307686400
• Sum of proper divisors (its aliquot sum) s(n): 3516780861051612
• 1991365446634788 is an abundant number, because the sum of its proper divisors (3516780861051612) is greater than itself. Its abundance is 1525415414416824

Bases of 1991365446634788

• Binary: 111000100110010001011100110000100001000110100100100₂
• Hexadecimal: 0x71322E6108D24
• Base-36: JLVONNE6UC

Squares and roots of 1991365446634788

• 1991365446634788 squared (1991365446634788²) is 3965536342050968693873851804944
• 1991365446634788 cubed (1991365446634788³) is 7896832048934810711305990682537008204580791872
• The square root of 1991365446634788 is 44624717.8885736823
• The cube root of 1991365446634788 is 125810.5291748859

Scales and comparisons

• 1,991,365,446,634,788 seconds is equal to 63,319,261 years, 26 weeks, 1 day, 21 hours, 39 minutes, 48 seconds.
• To count from 1 to 1,991,365,446,634,788 would take you about one hundred eighty-nine million, nine hundred fifty-seven thousand, seven 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 1991365446634788 cubic inches would be around 10484.2 feet tall.

Recreational maths with 1991365446634788

• 1991365446634788 backwards is 8874366445631991
• 1991365446634788 is a Harshad number.
• The number of decimal digits it has is: 16
• The sum of 1991365446634788's digits is 84
• More coming soon!