1997117385

Names of 1997117385

• Cardinal: 1997117385 can be written as One billion, nine hundred ninety-seven million, one hundred seventeen thousand, three hundred eighty-five.

Scientific notation

• Scientific notation: 1.997117385 × 10⁹

Factors of 1997117385

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 133141167

Divisors of 1997117385

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5 15 133141159 399423477 665705795 1997117385
• Sum of all divisors σ(n): 3195387840
• Sum of proper divisors (its aliquot sum) s(n): 1198270455
• 1997117385 is a deficient number, because the sum of its proper divisors (1198270455) is less than itself. Its deficiency is 798846930

Bases of 1997117385

• Binary: 1110111000010011001011111001001₂
• Hexadecimal: 0x770997C9
• Base-36: X115MX

Squares and roots of 1997117385

• 1997117385 squared (1997117385²) is 3988477849469238225
• 1997117385 cubed (1997117385³) is 7965458452862428681854041625
• The square root of 1997117385 is 44689.1193133185
• The cube root of 1997117385 is 1259.3154476291

Scales and comparisons

• 1,997,117,385 seconds is equal to 63 years, 26 weeks, 18 hours, 49 minutes, 45 seconds.
• To count from 1 to 1,997,117,385 would take you about one hundred twenty-seven 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 1997117385 cubic inches would be around 104.9 feet tall.

Recreational maths with 1997117385

• 1997117385 backwards is 5837117991
• The number of decimal digits it has is: 10
• The sum of 1997117385's digits is 51
• More coming soon!