1338974785

Names of 1338974785

• Cardinal: 1338974785 can be written as One billion, three hundred thirty-eight million, nine hundred seventy-four thousand, seven hundred eighty-five.

Scientific notation

• Scientific notation: 1.338974785 × 10⁹

Factors of 1338974785

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 1429

Divisors of 1338974785

• Number of divisors d(n): 32
• Complete list of divisors:
  1 5 23 31 115 155 379 713 991 1895 3565 4955 8717 11749 22793 30721 43585 58745 113965 153605 270227 375589 706583 1351135 1877945 3532915 8638547 11643259 43192735 58216295 267794957 1338974785
• Sum of all divisors σ(n): 1737031680
• Sum of proper divisors (its aliquot sum) s(n): 398056895
• 1338974785 is a deficient number, because the sum of its proper divisors (398056895) is less than itself. Its deficiency is 940917890

Bases of 1338974785

• Binary: 1001111110011110010001001000001₂
• Hexadecimal: 0x4FCF2241
• Base-36: M56VK1

Squares and roots of 1338974785

• 1338974785 squared (1338974785²) is 1792853474865796225
• 1338974785 cubed (1338974785³) is 2400585596044932404223186625
• The square root of 1338974785 is 36592.0043862043
• The cube root of 1338974785 is 1102.1925373647

Scales and comparisons

• 1,338,974,785 seconds is equal to 42 years, 29 weeks, 6 days, 9 hours, 26 minutes, 25 seconds.
• To count from 1 to 1,338,974,785 would take you about eighty-five 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 1338974785 cubic inches would be around 91.8 feet tall.

Recreational maths with 1338974785

• 1338974785 backwards is 5874798331
• The number of decimal digits it has is: 10
• The sum of 1338974785's digits is 55
• More coming soon!