1138

Names of 1138

• Cardinal: 1138 can be written as One thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 1.138 × 10³

Factors of 1138

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 571

Divisors of 1138

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2 569 1138
• Sum of all divisors σ(n): 1710
• Sum of proper divisors (its aliquot sum) s(n): 572
• 1138 is a deficient number, because the sum of its proper divisors (572) is less than itself. Its deficiency is 566

Bases of 1138

• Binary: 10001110010₂
• Hexadecimal: 0x472
• Base-36: VM

Squares and roots of 1138

• 1138 squared (1138²) is 1295044
• 1138 cubed (1138³) is 1473760072
• The square root of 1138 is 33.7342555869
• The cube root of 1138 is 10.4403266633

Scales and comparisons

• 1,138 seconds is equal to 18 minutes, 58 seconds.
• To count from 1 to 1,138 would take you about eighteen minutes.

  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 1138 cubic inches would be around 0.9 feet tall.

Recreational maths with 1138

• 1138 backwards is 8311
• The number of decimal digits it has is: 4
• The sum of 1138's digits is 13
• More coming soon!