18988401890790

Names of 18988401890790

• Cardinal: 18988401890790 can be written as Eighteen trillion, nine hundred eighty-eight billion, four hundred one million, eight hundred ninety thousand, seven hundred ninety.

Scientific notation

• Scientific notation: 1.898840189079 × 10¹³

Factors of 18988401890790

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2865770

Divisors of 18988401890790

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 30 45 90 75617 151234 226851 378085 453702 680553 756170 1134255 1361106 2268510 2790143 3402765 5580286 6805530 8370429 13950715 16740858 25111287 27901430 41852145 50222574 83704290 125556435 251112870 210982243231 421964486462 632946729693 1054911216155 1265893459386 1898840189079 2109822432310 3164733648465 3797680378158 6329467296930 9494200945395 18988401890790
• Sum of all divisors σ(n): 49370515504128
• Sum of proper divisors (its aliquot sum) s(n): 30382113613338
• 18988401890790 is an abundant number, because the sum of its proper divisors (30382113613338) is greater than itself. Its abundance is 11393711722548

Bases of 18988401890790

• Binary: 100010100010100010100111100110001010111100110₂
• Hexadecimal: 0x114514F315E6
• Base-36: 6QB5G7WTI

Squares and roots of 18988401890790

• 18988401890790 squared (18988401890790²) is 360559406366157247086824100
• 18988401890790 cubed (18988401890790³) is 6846446913585260233649911959736140039000
• The square root of 18988401890790 is 4357568.3460836275
• The cube root of 18988401890790 is 26678.5858357947

Scales and comparisons

• 18,988,401,890,790 seconds is equal to 603,772 years, 23 weeks, 1 day, 46 minutes, 30 seconds.
• To count from 1 to 18,988,401,890,790 would take you about one million, five hundred nine thousand, four hundred thirty-one 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 18988401890790 cubic inches would be around 2223.2 feet tall.

Recreational maths with 18988401890790

• 18988401890790 backwards is 09709810488981
• The number of decimal digits it has is: 14
• The sum of 18988401890790's digits is 72
• More coming soon!