1998531900

Names of 1998531900

• Cardinal: 1998531900 can be written as One billion, nine hundred ninety-eight million, five hundred thirty-one thousand, nine hundred.

Scientific notation

• Scientific notation: 1.9985319 × 10⁹

Factors of 1998531900

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 43568

Divisors of 1998531900

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 17 18 20 25 27 30 34 36 45 50 51 54 60 68 75 85 90 100 102 108 135 150 153 170 180 204 225 255 270 300 306 340 425 450 459 510 540 612 675 765 850 900 918 1020 1275 1350 1530 1700 1836 2295 2550 2700 3060 3825 4590 5100 7650 9180 11475 15300 22950 43541 45900 87082 130623 174164 217705 261246 391869 435410 522492 653115 740197 783738 870820 1088525 1175607 1306230 1480394 1567476 1959345 2177050 2220591 2351214 2612460 2960788 3265575 3700985 3918690 4354100 4441182 4702428 5878035 6531150 6661773 7401970 7837380 8882364 9796725 11102955 11756070 13062300 13323546 14803940 18504925 19593450 19985319 22205910 23512140 26647092 29390175 33308865 37009850 39186900 39970638 44411820 55514775 58780350 66617730 74019700 79941276 99926595 111029550 117560700 133235460 166544325 199853190 222059100 333088650 399706380 499632975 666177300 999265950 1998531900
• Sum of all divisors σ(n): 6803002080
• Sum of proper divisors (its aliquot sum) s(n): 4804470180
• 1998531900 is an abundant number, because the sum of its proper divisors (4804470180) is greater than itself. Its abundance is 2805938280

Bases of 1998531900

• Binary: 1110111000111110010110100111100₂
• Hexadecimal: 0x771F2D3C
• Base-36: X1VH30

Squares and roots of 1998531900

• 1998531900 squared (1998531900²) is 3994129755317610000
• 1998531900 cubed (1998531900³) is 7982395728741438216759000000
• The square root of 1998531900 is 44704.9426797529
• The cube root of 1998531900 is 1259.6126927505

Scales and comparisons

• 1,998,531,900 seconds is equal to 63 years, 28 weeks, 3 days, 3 hours, 45 minutes.
• To count from 1 to 1,998,531,900 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 1998531900 cubic inches would be around 105 feet tall.

Recreational maths with 1998531900

• 1998531900 backwards is 0091358991
• 1998531900 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1998531900's digits is 45
• More coming soon!