18389031608

Names of 18389031608

• Cardinal: 18389031608 can be written as Eighteen billion, three hundred eighty-nine million, thirty-one thousand, six hundred eight.

Scientific notation

• Scientific notation: 1.8389031608 × 10¹⁰

Factors of 18389031608

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 221

Divisors of 18389031608

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 8 31 62 79 109 124 158 218 248 316 436 632 872 2449 3379 4898 6241 6758 8611 9796 11881 12482 13516 17222 19592 23762 24964 27032 34444 47524 49928 68888 95048 193471 266941 368311 386942 533882 680269 736622 773884 938599 1067764 1360538 1473244 1547768 1877198 2135528 2721076 2946488 3754396 5442152 7508792 21088339 29096569 42176678 58193138 74149321 84353356 116386276 148298642 168706712 232772552 296597284 593194568 2298628951 4597257902 9194515804 18389031608
• Sum of all divisors σ(n): 36381653280
• Sum of proper divisors (its aliquot sum) s(n): 17992621672
• 18389031608 is a deficient number, because the sum of its proper divisors (17992621672) is less than itself. Its deficiency is 396409936

Bases of 18389031608

• Binary: 10001001000000100100101101010111000₂
• Hexadecimal: 0x448125AB8
• Base-36: 8G4CRLK

Squares and roots of 18389031608

• 18389031608 squared (18389031608²) is 338156483480023065664
• 18389031608 cubed (18389031608³) is 6218370263164273991064355507712
• The square root of 18389031608 is 135606.1636062315
• The cube root of 18389031608 is 2639.4875616199

Scales and comparisons

• 18,389,031,608 seconds is equal to 584 years, 37 weeks, 1 day, 20 minutes, 8 seconds.
• To count from 1 to 18,389,031,608 would take you about one thousand, one hundred sixty-nine 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 18389031608 cubic inches would be around 220 feet tall.

Recreational maths with 18389031608

• 18389031608 backwards is 80613098381
• The number of decimal digits it has is: 11
• The sum of 18389031608's digits is 47
• More coming soon!