1997125389

Names of 1997125389

• Cardinal: 1997125389 can be written as One billion, nine hundred ninety-seven million, one hundred twenty-five thousand, three hundred eighty-nine.

Scientific notation

• Scientific notation: 1.997125389 × 10⁹

Factors of 1997125389

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 173

Divisors of 1997125389

• Number of divisors d(n): 84
• Complete list of divisors:
  1 3 7 9 21 27 49 63 81 147 163 189 243 343 441 489 567 729 1029 1141 1323 1467 1701 2401 3087 3423 3969 4401 5103 7203 7987 9261 10269 11907 13203 16807 21609 23961 27783 30807 35721 39609 50421 55909 64827 71883 83349 92421 118827 151263 167727 194481 215649 250047 277263 391363 453789 503181 583443 646947 831789 1174089 1361367 1509543 1750329 1940841 2739541 3522267 4084101 4528629 5822523 8218623 10566801 12252303 13585887 24655869 31700403 40757661 73967607 95101209 221902821 285303627 665708463 1997125389
• Sum of all divisors σ(n): 3514773216
• Sum of proper divisors (its aliquot sum) s(n): 1517647827
• 1997125389 is a deficient number, because the sum of its proper divisors (1517647827) is less than itself. Its deficiency is 479477562

Bases of 1997125389

• Binary: 1110111000010011011011100001101₂
• Hexadecimal: 0x7709B70D
• Base-36: X11BT9

Squares and roots of 1997125389

• 1997125389 squared (1997125389²) is 3988509819388401321
• 1997125389 cubed (1997125389³) is 7965554224576380730290238869
• The square root of 1997125389 is 44689.2088652283
• The cube root of 1997125389 is 1259.3171299783

Scales and comparisons

• 1,997,125,389 seconds is equal to 63 years, 26 weeks, 21 hours, 3 minutes, 9 seconds.
• To count from 1 to 1,997,125,389 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 1997125389 cubic inches would be around 104.9 feet tall.

Recreational maths with 1997125389

• 1997125389 backwards is 9835217991
• The number of decimal digits it has is: 10
• The sum of 1997125389's digits is 54
• More coming soon!