18988009247

Names of 18988009247

• Cardinal: 18988009247 can be written as Eighteen billion, nine hundred eighty-eight million, nine thousand, two hundred forty-seven.

Scientific notation

• Scientific notation: 1.8988009247 × 10¹⁰

Factors of 18988009247

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1245312

Divisors of 18988009247

• Number of divisors d(n): 4
• Complete list of divisors:
  1 15439 1229873 18988009247
• Sum of all divisors σ(n): 18989254560
• Sum of proper divisors (its aliquot sum) s(n): 1245313
• 18988009247 is a deficient number, because the sum of its proper divisors (1245313) is less than itself. Its deficiency is 18986763934

Bases of 18988009247

• Binary: 10001101011110001100000011100011111₂
• Hexadecimal: 0x46BC6071F
• Base-36: 8Q0YXPB

Squares and roots of 18988009247

• 18988009247 squared (18988009247²) is 360544495164157507009
• 18988009247 cubed (18988009247³) is 6846022208131969526051359312223
• The square root of 18988009247 is 137796.9856237791
• The cube root of 18988009247 is 2667.8401947169

Scales and comparisons

• 18,988,009,247 seconds is equal to 603 years, 39 weeks, 3 days, 15 hours, 47 seconds.
• To count from 1 to 18,988,009,247 would take you about one thousand, two hundred 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 18988009247 cubic inches would be around 222.3 feet tall.

Recreational maths with 18988009247

• 18988009247 backwards is 74290088981
• The number of decimal digits it has is: 11
• The sum of 18988009247's digits is 56
• More coming soon!