7688138409

Names of 7688138409

• Cardinal: 7688138409 can be written as Seven billion, six hundred eighty-eight million, one hundred thirty-eight thousand, four hundred nine.

Scientific notation

• Scientific notation: 7.688138409 × 10⁹

Factors of 7688138409

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1475

Divisors of 7688138409

• Number of divisors d(n): 80
• Complete list of divisors:
  1 3 7 9 21 27 29 63 81 87 189 203 261 499 567 609 783 937 1497 1827 2349 2811 3493 4491 5481 6559 8433 10479 13473 14471 16443 19677 25299 27173 31437 40419 43413 59031 75897 81519 94311 101297 130239 177093 190211 244557 282933 303891 390717 467563 531279 570633 733671 911673 1172151 1402689 1711899 2201013 2735019 3272941 4208067 5135697 8205057 9818823 12624201 13559327 15407091 29456469 37872603 40677981 88369407 94915289 122033943 265108221 284745867 366101829 854237601 1098305487 2562712803 7688138409
• Sum of all divisors σ(n): 13619760000
• Sum of proper divisors (its aliquot sum) s(n): 5931621591
• 7688138409 is a deficient number, because the sum of its proper divisors (5931621591) is less than itself. Its deficiency is 1756516818

Bases of 7688138409

• Binary: 111001010001111111010111010101001₂
• Hexadecimal: 0x1CA3FAEA9
• Base-36: 3J5BHK9

Squares and roots of 7688138409

• 7688138409 squared (7688138409²) is 59107472195941051281
• 7688138409 cubed (7688138409³) is 454426427248513970253294751929
• The square root of 7688138409 is 87682.0301373093
• The cube root of 7688138409 is 1973.6663246389

Scales and comparisons

• 7,688,138,409 seconds is equal to 244 years, 23 weeks, 6 days, 2 hours, 9 seconds.
• To count from 1 to 7,688,138,409 would take you about four hundred eighty-eight 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 7688138409 cubic inches would be around 164.5 feet tall.

Recreational maths with 7688138409

• 7688138409 backwards is 9048318867
• The number of decimal digits it has is: 10
• The sum of 7688138409's digits is 54
• More coming soon!