1989521919

Names of 1989521919

• Cardinal: 1989521919 can be written as One billion, nine hundred eighty-nine million, five hundred twenty-one thousand, nine hundred nineteen.

Scientific notation

• Scientific notation: 1.989521919 × 10⁹

Factors of 1989521919

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 111

Divisors of 1989521919

• Number of divisors d(n): 168
• Complete list of divisors:
  1 3 7 9 11 21 23 27 33 63 67 69 77 81 99 161 189 201 207 231 243 253 297 469 483 529 567 603 621 693 729 737 759 891 1407 1449 1541 1587 1701 1771 1809 1863 2079 2211 2277 2673 3703 4221 4347 4623 4761 5103 5159 5313 5427 5589 5819 6237 6633 6831 8019 10787 11109 12663 13041 13869 14283 15477 15939 16281 16767 16951 17457 18711 19899 20493 32361 33327 35443 37989 39123 40733 41607 42849 46431 47817 48843 50853 52371 56133 59697 61479 97083 99981 106329 113967 117369 118657 122199 124821 128547 139293 143451 152559 157113 179091 184437 248101 291249 299943 318987 341901 355971 366597 374463 385641 389873 417879 430353 457677 471339 537273 744303 873747 899829 956961 1067913 1099791 1123389 1169619 1253637 1291059 1373031 1414017 2232909 2621241 2699487 2729111 2870883 3203739 3299373 3508857 3760911 4119093 4242051 6698727 7863723 8187333 8612649 9611217 9898119 10526571 12357279 20096181 24561999 25837947 28833651 29694357 31579713 60288543 73685997 86500953 94739139 180865629 221057991 284217417 663173973 1989521919
• Sum of all divisors σ(n): 3945712512
• Sum of proper divisors (its aliquot sum) s(n): 1956190593
• 1989521919 is a deficient number, because the sum of its proper divisors (1956190593) is less than itself. Its deficiency is 33331326

Bases of 1989521919

• Binary: 1110110100101011011000111111111₂
• Hexadecimal: 0x7695B1FF
• Base-36: WWICXR

Squares and roots of 1989521919

• 1989521919 squared (1989521919²) is 3958197466181442561
• 1989521919 cubed (1989521919³) is 7874920618698241206148994559
• The square root of 1989521919 is 44604.0572033531
• The cube root of 1989521919 is 1257.7169371207

Scales and comparisons

• 1,989,521,919 seconds is equal to 63 years, 13 weeks, 3 days, 20 hours, 58 minutes, 39 seconds.
• To count from 1 to 1,989,521,919 would take you about one hundred twenty-six 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 1989521919 cubic inches would be around 104.8 feet tall.

Recreational maths with 1989521919

• 1989521919 backwards is 9191259891
• The number of decimal digits it has is: 10
• The sum of 1989521919's digits is 54
• More coming soon!