2138731790

Names of 2138731790

• Cardinal: 2138731790 can be written as Two billion, one hundred thirty-eight million, seven hundred thirty-one thousand, seven hundred ninety.

Scientific notation

• Scientific notation: 2.13873179 × 10⁹

Factors of 2138731790

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 294

Divisors of 2138731790

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 10 13 26 41 53 65 67 82 106 113 130 134 205 226 265 335 410 530 533 565 670 689 871 1066 1130 1378 1469 1742 2173 2665 2747 2938 3445 3551 4346 4355 4633 5330 5494 5989 6890 7102 7345 7571 8710 9266 10865 11978 13735 14690 15142 17755 21730 23165 27470 28249 29945 35510 35711 37855 46163 46330 56498 59890 60229 71422 75710 77857 92326 98423 120458 141245 145591 155714 178555 196846 230815 245549 282490 291182 301145 310411 357110 389285 401263 461630 491098 492115 602290 620822 727955 778570 802526 984230 1227745 1455910 1552055 1892683 2006315 2455490 3104110 3192137 3785366 4012630 4035343 5216419 6384274 8070686 9463415 10432838 15960685 16451783 18926830 20176715 26082095 31921370 32903566 40353430 52164190 82258915 164517830 213873179 427746358 1069365895 2138731790
• Sum of all divisors σ(n): 4430547072
• Sum of proper divisors (its aliquot sum) s(n): 2291815282
• 2138731790 is an abundant number, because the sum of its proper divisors (2291815282) is greater than itself. Its abundance is 153083492

Bases of 2138731790

• Binary: 1111111011110100111010100001110₂
• Hexadecimal: 0x7F7A750E
• Base-36: ZDCG0E

Squares and roots of 2138731790

• 2138731790 squared (2138731790²) is 4574173669556604100
• 2138731790 cubed (2138731790³) is 9782930640061664393114339000
• The square root of 2138731790 is 46246.4246185583
• The cube root of 2138731790 is 1288.4041299489

Scales and comparisons

• 2,138,731,790 seconds is equal to 68 years, 1 day, 20 hours, 9 minutes, 50 seconds.
• To count from 1 to 2,138,731,790 would take you about one hundred thirty-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 2138731790 cubic inches would be around 107.4 feet tall.

Recreational maths with 2138731790

• 2138731790 backwards is 0971378312
• 2138731790 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 2138731790's digits is 41
• More coming soon!