1398789938

Names of 1398789938

• Cardinal: 1398789938 can be written as One billion, three hundred ninety-eight million, seven hundred eighty-nine thousand, nine hundred thirty-eight.

Scientific notation

• Scientific notation: 1.398789938 × 10⁹

Factors of 1398789938

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1051

Divisors of 1398789938

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 7 13 14 26 73 91 127 146 182 254 511 829 889 949 1022 1651 1658 1778 1898 3302 5803 6643 9271 10777 11557 11606 13286 18542 21554 23114 60517 64897 75439 105283 120523 121034 129794 150878 210566 241046 423619 736981 786721 843661 847238 1368679 1473962 1573442 1687322 2737358 5507047 7685659 9580753 11014094 15371318 19161506 53799613 99913567 107599226 199827134 699394969 1398789938
• Sum of all divisors σ(n): 2641551360
• Sum of proper divisors (its aliquot sum) s(n): 1242761422
• 1398789938 is a deficient number, because the sum of its proper divisors (1242761422) is less than itself. Its deficiency is 156028516

Bases of 1398789938

• Binary: 1010011010111111101011100110010₂
• Hexadecimal: 0x535FD732
• Base-36: N4SX82

Squares and roots of 1398789938

• 1398789938 squared (1398789938²) is 1956613290650043844
• 1398789938 cubed (1398789938³) is 2736890983518350808246041672
• The square root of 1398789938 is 37400.4002385001
• The cube root of 1398789938 is 1118.3665437061

Scales and comparisons

• 1,398,789,938 seconds is equal to 44 years, 24 weeks, 5 days, 16 hours, 45 minutes, 38 seconds.
• To count from 1 to 1,398,789,938 would take you about eighty-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 1398789938 cubic inches would be around 93.2 feet tall.

Recreational maths with 1398789938

• 1398789938 backwards is 8399878931
• The number of decimal digits it has is: 10
• The sum of 1398789938's digits is 65
• More coming soon!