1997499218

Names of 1997499218

• Cardinal: 1997499218 can be written as One billion, nine hundred ninety-seven million, four hundred ninety-nine thousand, two hundred eighteen.

Scientific notation

• Scientific notation: 1.997499218 × 10⁹

Factors of 1997499218

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 43

Divisors of 1997499218

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 11 13 17 22 26 34 121 143 169 187 221 242 286 289 338 374 442 578 1573 1859 2057 2197 2431 2873 3146 3179 3718 3757 4114 4394 4862 5746 6358 7514 20449 24167 26741 28561 31603 34969 37349 40898 41327 48334 48841 53482 57122 63206 69938 74698 82654 97682 265837 314171 347633 410839 454597 485537 531674 537251 628342 634933 695266 821678 909194 971074 1074502 1269866 3455881 4519229 5340907 5909761 6911762 6984263 8254129 9038458 10681814 11819522 13968526 16508258 58749977 76826893 90795419 117499954 153653786 181590838 998749609 1997499218
• Sum of all divisors σ(n): 3790055913
• Sum of proper divisors (its aliquot sum) s(n): 1792556695
• 1997499218 is a deficient number, because the sum of its proper divisors (1792556695) is less than itself. Its deficiency is 204942523

Bases of 1997499218

• Binary: 1110111000011110110101101010010₂
• Hexadecimal: 0x770F6B52
• Base-36: X19C9E

Squares and roots of 1997499218

• 1997499218 squared (1997499218²) is 3990003125910611524
• 1997499218 cubed (1997499218³) is 7970028123824002057091788232
• The square root of 1997499218 is 44693.3912116769
• The cube root of 1997499218 is 1259.3956995557

Scales and comparisons

• 1,997,499,218 seconds is equal to 63 years, 26 weeks, 5 days, 4 hours, 53 minutes, 38 seconds.
• To count from 1 to 1,997,499,218 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 1997499218 cubic inches would be around 104.9 feet tall.

Recreational maths with 1997499218

• 1997499218 backwards is 8129947991
• The number of decimal digits it has is: 10
• The sum of 1997499218's digits is 59
• More coming soon!