1643139420

Names of 1643139420

• Cardinal: 1643139420 can be written as One billion, six hundred forty-three million, one hundred thirty-nine thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.64313942 × 10⁹

Factors of 1643139420

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4342

Divisors of 1643139420

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 10 12 13 15 17 20 26 29 30 34 39 51 52 58 60 65 68 78 85 87 102 116 130 145 156 170 174 195 204 221 255 260 290 340 348 377 390 435 442 493 510 580 663 754 780 870 884 986 1020 1105 1131 1326 1479 1508 1740 1885 1972 2210 2262 2465 2652 2958 3315 3770 4273 4420 4524 4930 5655 5916 6409 6630 7395 7540 8546 9860 11310 12818 12819 13260 14790 17092 19227 21365 22620 25636 25638 29580 32045 38454 42730 51276 55549 64090 64095 72641 76908 85460 96135 111098 123917 128180 128190 145282 166647 192270 217923 222196 247834 256380 277745 290564 333294 363205 371751 384540 435846 495668 555490 619585 666588 726410 743502 833235 871692 944333 1089615 1110980 1239170 1452820 1487004 1610921 1666470 1858755 1888666 2106589 2179230 2478340 2832999 3221842 3332940 3717510 3777332 4213178 4358460 4721665 4832763 5665998 6319767 6443684 7435020 8054605 8426356 9443330 9665526 10532945 11331996 12639534 14164995 16109210 18886660 19331052 21065890 24163815 25279068 27385657 28329990 31598835 32218420 42131780 48327630 54771314 56659980 63197670 82156971 96655260 109542628 126395340 136928285 164313942 273856570 328627884 410784855 547713140 821569710 1643139420
• Sum of all divisors σ(n): 5428321920
• Sum of proper divisors (its aliquot sum) s(n): 3785182500
• 1643139420 is an abundant number, because the sum of its proper divisors (3785182500) is greater than itself. Its abundance is 2142043080

Bases of 1643139420

• Binary: 1100001111100000101000101011100₂
• Hexadecimal: 0x61F0515C
• Base-36: R6A6HO

Squares and roots of 1643139420

• 1643139420 squared (1643139420²) is 2699907153557936400
• 1643139420 cubed (1643139420³) is 4436323874351038552692888000
• The square root of 1643139420 is 40535.6561560313
• The cube root of 1643139420 is 1180.0257152299

Scales and comparisons

• 1,643,139,420 seconds is equal to 52 years, 12 weeks, 5 days, 19 hours, 37 minutes.
• To count from 1 to 1,643,139,420 would take you about one hundred four 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 1643139420 cubic inches would be around 98.3 feet tall.

Recreational maths with 1643139420

• 1643139420 backwards is 0249313461
• The number of decimal digits it has is: 10
• The sum of 1643139420's digits is 33
• More coming soon!