18101989

Names of 18101989

• Cardinal: 18101989 can be written as Eighteen million, one hundred one thousand, nine hundred eighty-nine.

Scientific notation

• Scientific notation: 1.8101989 × 10⁷

Factors of 18101989

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 787066

Divisors of 18101989

• Number of divisors d(n): 4
• Complete list of divisors:
  1 23 787043 18101989
• Sum of all divisors σ(n): 18889056
• Sum of proper divisors (its aliquot sum) s(n): 787067
• 18101989 is a deficient number, because the sum of its proper divisors (787067) is less than itself. Its deficiency is 17314922

Bases of 18101989

• Binary: 1000101000011011011100101₂
• Hexadecimal: 0x11436E5
• Base-36: ARZL1

Squares and roots of 18101989

• 18101989 squared (18101989²) is 327682005756121
• 18101989 cubed (18101989³) is 5931696063695239024669
• The square root of 18101989 is 4254.6432282861
• The cube root of 18101989 is 262.5681830443

Scales and comparisons

• 18,101,989 seconds is equal to 29 weeks, 6 days, 12 hours, 19 minutes, 49 seconds.
• To count from 1 to 18,101,989 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 18101989 cubic inches would be around 21.9 feet tall.

Recreational maths with 18101989

• 18101989 backwards is 98910181
• The number of decimal digits it has is: 8
• The sum of 18101989's digits is 37
• More coming soon!