6918993081

Names of 6918993081

• Cardinal: 6918993081 can be written as Six billion, nine hundred eighteen million, nine hundred ninety-three thousand and eighty-one.

Scientific notation

• Scientific notation: 6.918993081 × 10⁹

Factors of 6918993081

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 88

Divisors of 6918993081

• Number of divisors d(n): 288
• Complete list of divisors:
  1 3 7 9 11 13 17 21 27 33 37 39 51 63 77 91 99 111 117 119 121 143 153 187 189 221 231 259 273 297 333 351 357 363 407 429 459 481 561 629 663 693 777 819 847 999 1001 1071 1089 1221 1287 1309 1369 1443 1547 1573 1683 1887 1989 2057 2079 2331 2431 2457 2541 2849 3003 3213 3267 3367 3663 3861 3927 4107 4329 4403 4477 4641 4719 5049 5291 5661 5967 6171 6919 6993 7293 7623 8177 8547 9009 9583 10101 10989 11011 11781 12321 12987 13209 13431 13923 14157 14399 15059 15873 16983 17017 17797 18513 20757 21879 22869 23273 24531 25641 26741 27027 28749 30303 31339 33033 35343 36963 37037 39627 40293 41769 42471 43197 45177 47619 48433 51051 53391 55539 57239 58201 62271 65637 69819 73593 76109 76923 80223 86247 89947 90909 94017 99099 105413 111111 118881 120879 124579 129591 135531 142857 145299 153153 160173 162911 165649 171717 174603 186813 187187 195767 209457 220779 228327 240669 256003 258741 269841 282051 297297 302549 316239 333333 373737 388773 406593 407407 435897 459459 480519 488733 496947 515151 523809 532763 561561 587301 628371 629629 684981 722007 768009 809523 846153 907647 948717 989417 999999 1121211 1159543 1222221 1307691 1370369 1466199 1490841 1545453 1571427 1598289 1684683 1761903 1792021 1888887 2054943 2117843 2153437 2304027 2428569 2722941 2816033 2846151 2968251 3328039 3363633 3478629 3666663 4111107 4398597 4472523 4794867 5054049 5285709 5376063 5666661 6353529 6460311 6912081 6925919 8168823 8448099 8904753 9984117 10435887 10999989 12333321 14384601 15074059 16128189 16999983 19060587 19380933 19712231 20777757 23296273 25344297 26714259 29952351 31307661 36608429 36999963 45222177 48384567 57181761 58142799 59136693 62333271 69888819 76032891 89857053 109825287 135666531 177410079 186999813 209666457 256259003 329475861 406999593 532230237 628999371 768777009 988427583 2306331027 6918993081
• Sum of all divisors σ(n): 15090243840
• Sum of proper divisors (its aliquot sum) s(n): 8171250759
• 6918993081 is an abundant number, because the sum of its proper divisors (8171250759) is greater than itself. Its abundance is 1252257678

Bases of 6918993081

• Binary: 110011100011001110111010010111001₂
• Hexadecimal: 0x19C6774B9
• Base-36: 36FE189

Squares and roots of 6918993081

• 6918993081 squared (6918993081²) is 47872465254925872561
• 6918993081 cubed (6918993081³) is 331229255869245013417446750441
• The square root of 6918993081 is 83180.4849769463
• The cube root of 6918993081 is 1905.5234546395

Scales and comparisons

• 6,918,993,081 seconds is equal to 220 years, 22 hours, 31 minutes, 21 seconds.
• To count from 1 to 6,918,993,081 would take you about four hundred forty 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 6918993081 cubic inches would be around 158.8 feet tall.

Recreational maths with 6918993081

• 6918993081 backwards is 1803998196
• The number of decimal digits it has is: 10
• The sum of 6918993081's digits is 54
• More coming soon!