13781394168

Names of 13781394168

• Cardinal: 13781394168 can be written as Thirteen billion, seven hundred eighty-one million, three hundred ninety-four thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 1.3781394168 × 10¹⁰

Factors of 13781394168

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 6400

Divisors of 13781394168

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 8 12 24 59 118 177 236 354 472 708 1416 2617 3719 5234 7438 7851 10468 11157 14876 15702 20936 22314 29752 31404 44628 62808 89256 154403 219421 308806 438842 463209 617612 658263 877684 926418 1235224 1316526 1755368 1852836 2633052 3705672 5266104 9732623 19465246 29197869 38930492 58395738 77860984 116791476 233582952 574224757 1148449514 1722674271 2296899028 3445348542 4593798056 6890697084 13781394168
• Sum of all divisors σ(n): 35060256000
• Sum of proper divisors (its aliquot sum) s(n): 21278861832
• 13781394168 is an abundant number, because the sum of its proper divisors (21278861832) is greater than itself. Its abundance is 7497467664

Bases of 13781394168

• Binary: 1100110101011011110110001011111000₂
• Hexadecimal: 0x3356F62F8
• Base-36: 6BX33SO

Squares and roots of 13781394168

• 13781394168 squared (13781394168²) is 189926825213784412224
• 13781394168 cubed (13781394168³) is 2617456441348003851833141509632
• The square root of 13781394168 is 117394.1828541771
• The cube root of 13781394168 is 2397.5318473517

Scales and comparisons

• 13,781,394,168 seconds is equal to 438 years, 10 weeks, 4 days, 21 hours, 2 minutes, 48 seconds.
• To count from 1 to 13,781,394,168 would take you about eight hundred seventy-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 13781394168 cubic inches would be around 199.8 feet tall.

Recreational maths with 13781394168

• 13781394168 backwards is 86149318731
• The number of decimal digits it has is: 11
• The sum of 13781394168's digits is 51
• More coming soon!