18399779713803981

Names of 18399779713803981

• Cardinal: 18399779713803981 can be written as Eighteen quadrillion, three hundred ninety-nine trillion, seven hundred seventy-nine billion, seven hundred thirteen million, eight hundred three thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 1.8399779713803981 × 10¹⁶

Factors of 18399779713803981

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2367

Divisors of 18399779713803981

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 31 93 97 127 291 307 379 381 921 1137 1423 3007 3937 4269 9021 9409 9517 11749 11811 12319 28227 28551 29779 35247 36763 36957 38989 44113 48133 89337 110289 116353 116967 132339 138031 144399 180721 291679 349059 381889 414093 436861 539317 542163 875037 923149 1139653 1145667 1194943 1208659 1310583 1492123 1617951 2769447 2888563 3418959 3566011 3584829 3606943 3625977 3781933 4278961 4476369 4668901 5602351 8665689 10698033 10820829 11286241 11345799 12836883 13389007 13542691 14006703 14776831 16718827 16807053 17529937 33858723 37043233 40167021 40628073 42375517 44330493 50156481 52313749 52589811 55481347 68493259 89545453 110546341 111129699 117239923 127126551 144735931 156941247 165570319 166444041 205479777 268636359 331639023 349873471 351719769 366847501 415059217 434207793 452883397 458081761 496710957 543428047 1049620413 1094765377 1100542503 1245177651 1313641027 1358650191 1374245283 1433352607 1621726219 1630284141 1700403889 1719921757 2123291029 3284296131 3940923081 4110425149 4300057821 4865178657 5074433653 5101211667 5132679889 5159765271 5381690659 6369873087 6643846123 11372272531 12331275447 14039385307 15223300959 15398039667 16060320943 16145071977 19931538369 21027430513 33937726687 34116817593 42118155921 44433930817 48180962829 52712520559 63082291539 101813180061 127423179619 133301792451 139035202879 157307443243 158137561677 166832410429 205959229813 382269538857 417105608637 471922329729 497869949233 500497231287 522023993923 617877689439 644453073931 651850345903 1493609847699 1557851131471 1566071981769 1933359221793 1955551037709 2039660759761 4310091289249 4673553394413 6118982279283 12930273867747 16182743811613 19978045291861 48293385075601 48548231434839 59934135875583 63229483552591 144880155226803 189688450657773 197847093696817 593541281090451 6133259904601327 18399779713803981
• Sum of all divisors σ(n): 25960182165012480
• Sum of proper divisors (its aliquot sum) s(n): 7560402451208499
• 18399779713803981 is a deficient number, because the sum of its proper divisors (7560402451208499) is less than itself. Its deficiency is 10839377262595482

Bases of 18399779713803981

• Binary: 1000001010111101000000010001101110010010110011011001101₂
• Hexadecimal: 0x415E808DC966CD
• Base-36: 5166E3XD4UL

Squares and roots of 18399779713803981

• 18399779713803981 squared (18399779713803981²) is 338551893516512508956521291448361
• 18399779713803981 cubed (18399779713803981³) is 6229280262395052382710230500907486059320337725141
• The square root of 18399779713803981 is 135645787.6743836855
• The cube root of 18399779713803981 is 264000.1708074155

Scales and comparisons

• 18,399,779,713,803,981 seconds is equal to 585,056,080 years, 33 weeks, 3 days, 5 hours, 6 minutes, 21 seconds.
• To count from 1 to 18,399,779,713,803,981 would take you about one billion, seven hundred fifty-five million, one hundred sixty-eight thousand, two hundred forty-one 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 18399779713803981 cubic inches would be around 22000 feet tall.

Recreational maths with 18399779713803981

• 18399779713803981 backwards is 18930831797799381
• 18399779713803981 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 18399779713803981's digits is 93
• More coming soon!