18889491231

Names of 18889491231

• Cardinal: 18889491231 can be written as Eighteen billion, eight hundred eighty-nine million, four hundred ninety-one thousand, two hundred thirty-one.

Scientific notation

• Scientific notation: 1.8889491231 × 10¹⁰

Factors of 18889491231

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5302

Divisors of 18889491231

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 9 13 17 19 39 51 57 97 117 153 171 221 247 291 323 663 741 873 969 1261 1649 1843 1989 2223 2907 3783 4199 4947 5153 5529 11349 12597 14841 15459 16587 21437 23959 31331 37791 46377 64311 66989 71877 87601 93993 97907 192933 200967 215631 262803 281979 293721 407303 499841 602901 788409 881163 1138813 1221909 1272791 1499523 1664419 3416439 3665727 3818373 4498569 4993257 6497933 8497297 9496979 10249317 11455119 14979771 19493799 21637447 25491891 28490937 58481397 64912341 76475673 85472811 110464861 123460727 161448643 194737023 331394583 370382181 484345929 994183749 1111146543 1453037787 2098832359 6296497077 18889491231
• Sum of all divisors σ(n): 33093627840
• Sum of proper divisors (its aliquot sum) s(n): 14204136609
• 18889491231 is a deficient number, because the sum of its proper divisors (14204136609) is less than itself. Its deficiency is 4685354622

Bases of 18889491231

• Binary: 10001100101111001101100001100011111₂
• Hexadecimal: 0x465E6C31F
• Base-36: 8OEBCPR

Squares and roots of 18889491231

• 18889491231 squared (18889491231²) is 356812878966025895361
• 18889491231 cubed (18889491231³) is 6740013748336610497340533079391
• The square root of 18889491231 is 137439.0455110919
• The cube root of 18889491231 is 2663.2182217385

Scales and comparisons

• 18,889,491,231 seconds is equal to 600 years, 32 weeks, 4 days, 8 hours, 53 minutes, 51 seconds.
• To count from 1 to 18,889,491,231 would take you about one thousand, two hundred 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 18889491231 cubic inches would be around 221.9 feet tall.

Recreational maths with 18889491231

• 18889491231 backwards is 13219498881
• The number of decimal digits it has is: 11
• The sum of 18889491231's digits is 54
• More coming soon!