18189935040

Names of 18189935040

• Cardinal: 18189935040 can be written as Eighteen billion, one hundred eighty-nine million, nine hundred thirty-five thousand and forty.

Scientific notation

• Scientific notation: 1.818993504 × 10¹⁰

Factors of 18189935040

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 18947859

Divisors of 18189935040

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 192 240 320 480 960 18947849 37895698 56843547 75791396 94739245 113687094 151582792 189478490 227374188 284217735 303165584 378956980 454748376 568435470 606331168 757913960 909496752 1136870940 1212662336 1515827920 1818993504 2273741880 3031655840 3637987008 4547483760 6063311680 9094967520 18189935040
• Sum of all divisors σ(n): 57753046800
• Sum of proper divisors (its aliquot sum) s(n): 39563111760
• 18189935040 is an abundant number, because the sum of its proper divisors (39563111760) is greater than itself. Its abundance is 21373176720

Bases of 18189935040

• Binary: 10000111100001101000110000111000000₂
• Hexadecimal: 0x43C3461C0
• Base-36: 8CTTFPC

Squares and roots of 18189935040

• 18189935040 squared (18189935040²) is 330873736759419801600
• 18189935040 cubed (18189935040³) is 6018571778095906299193688064000
• The square root of 18189935040 is 134870.0672499275
• The cube root of 18189935040 is 2629.9271348971

Scales and comparisons

• 18,189,935,040 seconds is equal to 578 years, 19 weeks, 6 days, 15 hours, 44 minutes.
• To count from 1 to 18,189,935,040 would take you about one thousand, one hundred fifty-six 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 18189935040 cubic inches would be around 219.2 feet tall.

Recreational maths with 18189935040

• 18189935040 backwards is 04053998181
• 18189935040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18189935040's digits is 48
• More coming soon!