18418993039638

Names of 18418993039638

• Cardinal: 18418993039638 can be written as Eighteen trillion, four hundred eighteen billion, nine hundred ninety-three million, thirty-nine thousand, six hundred thirty-eight.

Scientific notation

• Scientific notation: 1.8418993039638 × 10¹³

Factors of 18418993039638

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2582

Divisors of 18418993039638

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 6 9 18 27 29 54 58 71 81 87 142 162 174 213 243 261 426 486 522 639 729 783 1278 1458 1566 1917 2059 2349 2477 3834 4118 4698 4954 5751 6177 7047 7431 11502 12354 14094 14862 17253 18531 21141 22293 34506 37062 42282 44586 51759 55593 66879 71833 103518 111186 133758 143666 166779 175867 200637 215499 333558 351734 401274 430998 500337 527601 601911 646497 1000674 1055202 1203822 1292994 1501011 1582803 1805733 1939491 3002022 3165606 3611466 3878982 4748409 5100143 5818473 6135529 9496818 10200286 11636946 12271058 14245227 15300429 17455419 18406587 28490454 30600858 34910838 36813174 42735681 45901287 52366257 55219761 85471362 91802574 104732514 110439522 128207043 137703861 165659283 177930341 256414086 275407722 331318566 355860682 413111583 435622559 496977849 533791023 826223166 871245118 993955698 1067582046 1239334749 1306867677 1490933547 1601373069 2478669498 2613735354 2981867094 3202746138 3718004247 3920603031 4472800641 4804119207 7436008494 7841206062 8945601282 9608238414 11761809093 12633054211 14412357621 23523618186 25266108422 28824715242 35285427279 37899162633 43237072863 70570854558 75798325266 86474145726 105856281837 113697487899 129711218589 211712563674 227394975798 259422437178 317568845511 341092463697 635137691022 682184927394 1023277391091 2046554782182 3069832173273 6139664346546 9209496519819 18418993039638
• Sum of all divisors σ(n): 43473293898480
• Sum of proper divisors (its aliquot sum) s(n): 25054300858842
• 18418993039638 is an abundant number, because the sum of its proper divisors (25054300858842) is greater than itself. Its abundance is 6635307819204

Bases of 18418993039638

• Binary: 100001100000010000001100010011000100100010110₂
• Hexadecimal: 0x10C081898916
• Base-36: 6J1KGW3DI

Squares and roots of 18418993039638

• 18418993039638 squared (18418993039638²) is 339259304594233090639171044
• 18418993039638 cubed (18418993039638³) is 6248814769953607452357468231994153842072
• The square root of 18418993039638 is 4291735.4344877783
• The cube root of 18418993039638 is 26409.2029820095

Scales and comparisons

• 18,418,993,039,638 seconds is equal to 585,667 years, 1 day, 19 hours, 27 minutes, 18 seconds.
• To count from 1 to 18,418,993,039,638 would take you about one million, four hundred sixty-four thousand, one hundred sixty-seven 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 18418993039638 cubic inches would be around 2200.8 feet tall.

Recreational maths with 18418993039638

• 18418993039638 backwards is 83693039981481
• The number of decimal digits it has is: 14
• The sum of 18418993039638's digits is 72
• More coming soon!