18011813

Names of 18011813

• Cardinal: 18011813 can be written as Eighteen million, eleven thousand, eight hundred thirteen.

Scientific notation

• Scientific notation: 1.8011813 × 10⁷

Factors of 18011813

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 621126

Divisors of 18011813

• Number of divisors d(n): 4
• Complete list of divisors:
  1 29 621097 18011813
• Sum of all divisors σ(n): 18632940
• Sum of proper divisors (its aliquot sum) s(n): 621127
• 18011813 is a deficient number, because the sum of its proper divisors (621127) is less than itself. Its deficiency is 17390686

Bases of 18011813

• Binary: 1000100101101011010100101₂
• Hexadecimal: 0x112D6A5
• Base-36: AQ205

Squares and roots of 18011813

• 18011813 squared (18011813²) is 324425407546969
• 18011813 cubed (18011813³) is 5843489773184794344797
• The square root of 18011813 is 4244.0326341819
• The cube root of 18011813 is 262.1314580283

Scales and comparisons

• 18,011,813 seconds is equal to 29 weeks, 5 days, 11 hours, 16 minutes, 53 seconds.
• To count from 1 to 18,011,813 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 18011813 cubic inches would be around 21.8 feet tall.

Recreational maths with 18011813

• 18011813 backwards is 31811081
• The number of decimal digits it has is: 8
• The sum of 18011813's digits is 23
• More coming soon!