1381991247

Names of 1381991247

• Cardinal: 1381991247 can be written as One billion, three hundred eighty-one million, nine hundred ninety-one thousand, two hundred forty-seven.

Scientific notation

• Scientific notation: 1.381991247 × 10⁹

Factors of 1381991247

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 906

Divisors of 1381991247

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 9 13 21 27 39 49 63 91 117 147 169 189 273 343 351 441 507 637 819 883 1029 1183 1323 1521 1911 2457 2649 3087 3549 4459 4563 5733 6181 7947 8281 9261 10647 11479 13377 17199 18543 23841 24843 31941 34437 40131 43267 55629 57967 74529 80353 103311 120393 129801 149227 166887 173901 223587 241059 302869 309933 389403 447681 521703 562471 723177 908607 1044589 1168209 1343043 1565109 1687413 2169531 2725821 3133767 3937297 4029129 5062239 7312123 8177463 9401301 11811891 15186717 21936369 28203903 35435673 51184861 65809107 106307019 153554583 197427321 460663749 1381991247
• Sum of all divisors σ(n): 2588352000
• Sum of proper divisors (its aliquot sum) s(n): 1206360753
• 1381991247 is a deficient number, because the sum of its proper divisors (1206360753) is less than itself. Its deficiency is 175630494

Bases of 1381991247

• Binary: 1010010010111111000001101001111₂
• Hexadecimal: 0x525F834F
• Base-36: MUSV9R

Squares and roots of 1381991247

• 1381991247 squared (1381991247²) is 1909899806784615009
• 1381991247 cubed (1381991247³) is 2639464815623329156702826223
• The square root of 1381991247 is 37175.1428645539
• The cube root of 1381991247 is 1113.8715139103

Scales and comparisons

• 1,381,991,247 seconds is equal to 43 years, 49 weeks, 6 hours, 27 minutes, 27 seconds.
• To count from 1 to 1,381,991,247 would take you about eighty-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 1381991247 cubic inches would be around 92.8 feet tall.

Recreational maths with 1381991247

• 1381991247 backwards is 7421991831
• The number of decimal digits it has is: 10
• The sum of 1381991247's digits is 45
• More coming soon!