18118155

Names of 18118155

• Cardinal: 18118155 can be written as Eighteen million, one hundred eighteen thousand, one hundred fifty-five.

Scientific notation

• Scientific notation: 1.8118155 × 10⁷

Factors of 18118155

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 109826

Divisors of 18118155

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 5 11 15 33 55 165 109807 329421 549035 1207877 1647105 3623631 6039385 18118155
• Sum of all divisors σ(n): 31624704
• Sum of proper divisors (its aliquot sum) s(n): 13506549
• 18118155 is a deficient number, because the sum of its proper divisors (13506549) is less than itself. Its deficiency is 4611606

Bases of 18118155

• Binary: 1000101000111011000001011₂
• Hexadecimal: 0x114760B
• Base-36: ASC23

Squares and roots of 18118155

• 18118155 squared (18118155²) is 328267540604025
• 18118155 cubed (18118155³) is 5947602182132518573875
• The square root of 18118155 is 4256.5426110871
• The cube root of 18118155 is 262.6463220505

Scales and comparisons

• 18,118,155 seconds is equal to 29 weeks, 6 days, 16 hours, 49 minutes, 15 seconds.
• To count from 1 to 18,118,155 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 18118155 cubic inches would be around 21.9 feet tall.

Recreational maths with 18118155

• 18118155 backwards is 55181181
• The number of decimal digits it has is: 8
• The sum of 18118155's digits is 30
• More coming soon!