19009981

Names of 19009981

• Cardinal: 19009981 can be written as Nineteen million, nine thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 1.9009981 × 10⁷

Factors of 19009981

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 19009981

Divisors of 19009981

• Number of divisors d(n): 2
• Complete list of divisors:
  1 19009981
• Sum of all divisors σ(n): 19009982
• Sum of proper divisors (its aliquot sum) s(n): 1
• 19009981 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 19009980

Bases of 19009981

• Binary: 1001000100001000110111101₂
• Hexadecimal: 0x12211BD
• Base-36: BBG71

Squares and roots of 19009981

• 19009981 squared (19009981²) is 361379377620361
• 19009981 cubed (19009981³) is 6869815102354887823141
• The square root of 19009981 is 4360.0436924417
• The cube root of 19009981 is 266.8868818101

Scales and comparisons

• 19,009,981 seconds is equal to 31 weeks, 3 days, 33 minutes, 1 second.
• To count from 1 to 19,009,981 would take you about forty-seven 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 19009981 cubic inches would be around 22.2 feet tall.

Recreational maths with 19009981

• 19009981 backwards is 18990091
• The number of decimal digits it has is: 8
• The sum of 19009981's digits is 37
• More coming soon!