18671321989

Names of 18671321989

• Cardinal: 18671321989 can be written as Eighteen billion, six hundred seventy-one million, three hundred twenty-one thousand, nine hundred eighty-nine.

Scientific notation

• Scientific notation: 1.8671321989 × 10¹⁰

Factors of 18671321989

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 22611

Divisors of 18671321989

• Number of divisors d(n): 8
• Complete list of divisors:
  1 151 9661 12799 1458811 1932649 123651139 18671321989
• Sum of all divisors σ(n): 18798387200
• Sum of proper divisors (its aliquot sum) s(n): 127065211
• 18671321989 is a deficient number, because the sum of its proper divisors (127065211) is less than itself. Its deficiency is 18544256778

Bases of 18671321989

• Binary: 10001011000111001011100001110000101₂
• Hexadecimal: 0x458E5C385
• Base-36: 8KSF891

Squares and roots of 18671321989

• 18671321989 squared (18671321989²) is 348618264816914916121
• 18671321989 cubed (18671321989³) is 6509163873643088532512117884669
• The square root of 18671321989 is 136643.0458859871
• The cube root of 18671321989 is 2652.9253082905

Scales and comparisons

• 18,671,321,989 seconds is equal to 593 years, 35 weeks, 6 days, 6 hours, 19 minutes, 49 seconds.
• To count from 1 to 18,671,321,989 would take you about one thousand, one hundred eighty-seven 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 18671321989 cubic inches would be around 221.1 feet tall.

Recreational maths with 18671321989

• 18671321989 backwards is 98912317681
• The number of decimal digits it has is: 11
• The sum of 18671321989's digits is 55
• More coming soon!