18380408865

Names of 18380408865

• Cardinal: 18380408865 can be written as Eighteen billion, three hundred eighty million, four hundred eight thousand, eight hundred sixty-five.

Scientific notation

• Scientific notation: 1.8380408865 × 10¹⁰

Factors of 18380408865

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 62112

Divisors of 18380408865

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 7 13 15 21 31 35 39 49 65 91 93 105 147 155 195 217 245 273 403 455 465 637 651 735 1085 1209 1365 1519 1911 2015 2821 3185 3255 4557 6045 7595 8463 9555 14105 19747 22785 42315 59241 62053 98735 186159 296205 310265 434371 806689 930795 1303113 1923643 2171855 2420067 3040597 4033445 5646823 5770929 6515565 9121791 9618215 12100335 13465501 15202985 16940469 25007359 28234115 28854645 39527761 40396503 45608955 67327505 75022077 84702345 94258507 118583283 125036795 175051513 197638805 201982515 282775521 375110385 471292535 525154539 592916415 875257565 1225360591 1413877605 2625772695 3676081773 6126802955 18380408865
• Sum of all divisors σ(n): 38030662656
• Sum of proper divisors (its aliquot sum) s(n): 19650253791
• 18380408865 is an abundant number, because the sum of its proper divisors (19650253791) is greater than itself. Its abundance is 1269844926

Bases of 18380408865

• Binary: 10001000111100011101100100000100001₂
• Hexadecimal: 0x4478EC821
• Base-36: 8FZ7Y8X

Squares and roots of 18380408865

• 18380408865 squared (18380408865²) is 337839430044570588225
• 18380408865 cubed (18380408865³) is 6209626854937772584929054614625
• The square root of 18380408865 is 135574.3665484003
• The cube root of 18380408865 is 2639.0749391811

Scales and comparisons

• 18,380,408,865 seconds is equal to 584 years, 22 weeks, 6 days, 5 hours, 7 minutes, 45 seconds.
• To count from 1 to 18,380,408,865 would take you about one thousand, one hundred sixty-eight 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 18380408865 cubic inches would be around 219.9 feet tall.

Recreational maths with 18380408865

• 18380408865 backwards is 56880408381
• The number of decimal digits it has is: 11
• The sum of 18380408865's digits is 51
• More coming soon!