195

Names of 195

• Cardinal: 195 can be written as One hundred ninety-five.

Scientific notation

• Scientific notation: 1.95 × 10²

Factors of 195

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 21

Divisors of 195

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5 13 15 39 65 195
• Sum of all divisors σ(n): 336
• Sum of proper divisors (its aliquot sum) s(n): 141
• 195 is a deficient number, because the sum of its proper divisors (141) is less than itself. Its deficiency is 54

Bases of 195

• Binary: 11000011₂
• Hexadecimal: 0xC3
• Base-36: 5F

Squares and roots of 195

• 195 squared (195²) is 38025
• 195 cubed (195³) is 7414875
• The square root of 195 is 13.9642400437
• The cube root of 195 is 5.7988899977

Scales and comparisons

• 195 seconds is equal to 3 minutes, 15 seconds.
• To count from 1 to 195 would take you about thirty-seven seconds.

  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 195 cubic inches would be around 0.5 feet tall.

Recreational maths with 195

• 195 backwards is 591
• 195 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 195's digits is 15
• More coming soon!