18388353913

Names of 18388353913

• Cardinal: 18388353913 can be written as Eighteen billion, three hundred eighty-eight million, three hundred fifty-three thousand, nine hundred thirteen.

Scientific notation

• Scientific notation: 1.8388353913 × 10¹⁰

Factors of 18388353913

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 332666

Divisors of 18388353913

• Number of divisors d(n): 4
• Complete list of divisors:
  1 70009 262657 18388353913
• Sum of all divisors σ(n): 18388686580
• Sum of proper divisors (its aliquot sum) s(n): 332667
• 18388353913 is a deficient number, because the sum of its proper divisors (332667) is less than itself. Its deficiency is 18388021246

Bases of 18388353913

• Binary: 10001001000000010000000001101111001₂
• Hexadecimal: 0x448080379
• Base-36: 8G3Y8OP

Squares and roots of 18388353913

• 18388353913 squared (18388353913²) is 338131559629742411569
• 18388353913 cubed (18388353913³) is 6217682787626366704956877619497
• The square root of 18388353913 is 135603.6648214201
• The cube root of 18388353913 is 2639.4551366843

Scales and comparisons

• 18,388,353,913 seconds is equal to 584 years, 36 weeks, 4 hours, 5 minutes, 13 seconds.
• To count from 1 to 18,388,353,913 would take you about one thousand, one hundred sixty-nine 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 18388353913 cubic inches would be around 220 feet tall.

Recreational maths with 18388353913

• 18388353913 backwards is 31935388381
• The number of decimal digits it has is: 11
• The sum of 18388353913's digits is 52
• More coming soon!