18138679

Names of 18138679

• Cardinal: 18138679 can be written as Eighteen million, one hundred thirty-eight thousand, six hundred seventy-nine.

Scientific notation

• Scientific notation: 1.8138679 × 10⁷

Factors of 18138679

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1395296

Divisors of 18138679

• Number of divisors d(n): 4
• Complete list of divisors:
  1 13 1395283 18138679
• Sum of all divisors σ(n): 19533976
• Sum of proper divisors (its aliquot sum) s(n): 1395297
• 18138679 is a deficient number, because the sum of its proper divisors (1395297) is less than itself. Its deficiency is 16743382

Bases of 18138679

• Binary: 1000101001100011000110111₂
• Hexadecimal: 0x114C637
• Base-36: ASRW7

Squares and roots of 18138679

• 18138679 squared (18138679²) is 329011675865041
• 18138679 cubed (18138679³) is 5967837175768026020839
• The square root of 18138679 is 4258.9528055615
• The cube root of 18138679 is 262.7454586889

Scales and comparisons

• 18,138,679 seconds is equal to 29 weeks, 6 days, 22 hours, 31 minutes, 19 seconds.
• To count from 1 to 18,138,679 would take you about forty-four weeks!

  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 18138679 cubic inches would be around 21.9 feet tall.

Recreational maths with 18138679

• 18138679 backwards is 97683181
• The number of decimal digits it has is: 8
• The sum of 18138679's digits is 43
• More coming soon!