18918639369

Names of 18918639369

• Cardinal: 18918639369 can be written as Eighteen billion, nine hundred eighteen million, six hundred thirty-nine thousand, three hundred sixty-nine.

Scientific notation

• Scientific notation: 1.8918639369 × 10¹⁰

Factors of 18918639369

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 71

Divisors of 18918639369

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 9 21 27 49 61 63 81 147 183 189 243 343 427 441 549 567 1029 1281 1323 1647 1701 2989 3087 3721 3843 3969 4941 8967 9261 11163 11529 11907 14823 20923 26047 26901 27783 33489 34587 62769 78141 80703 83349 100467 103761 182329 188307 226981 234423 242109 301401 546987 564921 680943 703269 726327 904203 1276303 1588867 1640961 1694763 2042829 2109807 3828909 4766601 4922883 5084289 6128487 6329421 11122069 11486727 14299803 14768649 18385461 33366207 34460181 42899409 44305947 55156383 77854483 100098621 103380543 128698227 233563449 300295863 310141629 386094681 700690347 900887589 2102071041 2702662767 6306213123 18918639369
• Sum of all divisors σ(n): 33599238400
• Sum of proper divisors (its aliquot sum) s(n): 14680599031
• 18918639369 is a deficient number, because the sum of its proper divisors (14680599031) is less than itself. Its deficiency is 4238040338

Bases of 18918639369

• Binary: 10001100111101000111000011100001001₂
• Hexadecimal: 0x467A38709
• Base-36: 8OVO3K9

Squares and roots of 18918639369

• 18918639369 squared (18918639369²) is 357914915574276718161
• 18918639369 cubed (18918639369³) is 6771263212535822763900811880409
• The square root of 18918639369 is 137545.0448725797
• The cube root of 18918639369 is 2664.5873773295

Scales and comparisons

• 18,918,639,369 seconds is equal to 601 years, 28 weeks, 5 days, 17 hours, 36 minutes, 9 seconds.
• To count from 1 to 18,918,639,369 would take you about one thousand, two hundred three 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 18918639369 cubic inches would be around 222 feet tall.

Recreational maths with 18918639369

• 18918639369 backwards is 96393681981
• 18918639369 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18918639369's digits is 63
• More coming soon!