19835138439

Names of 19835138439

• Cardinal: 19835138439 can be written as Nineteen billion, eight hundred thirty-five million, one hundred thirty-eight thousand, four hundred thirty-nine.

Scientific notation

• Scientific notation: 1.9835138439 × 10¹⁰

Factors of 19835138439

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 939

Divisors of 19835138439

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 9 27 29 87 241 257 261 409 723 771 783 1227 2169 2313 3681 6507 6939 6989 7453 11043 11861 20967 22359 35583 61937 62901 67077 98569 105113 106749 185811 188703 201231 295707 315339 320247 557433 887121 946017 1672299 1796173 2661363 2838051 2858501 3048277 5388519 8575503 9144831 16165557 25332233 25726509 27434493 48496671 75996699 77179527 82303479 227990097 683970291 734634757 2203904271 6611712813 19835138439
• Sum of all divisors σ(n): 30718512000
• Sum of proper divisors (its aliquot sum) s(n): 10883373561
• 19835138439 is a deficient number, because the sum of its proper divisors (10883373561) is less than itself. Its deficiency is 8951764878

Bases of 19835138439

• Binary: 10010011110010001000011000110000111₂
• Hexadecimal: 0x49E443187
• Base-36: 941BURR

Squares and roots of 19835138439

• 19835138439 squared (19835138439²) is 393432716894295356721
• 19835138439 cubed (19835138439³) is 7803792406030242529915924098519
• The square root of 19835138439 is 140837.2764540695
• The cube root of 19835138439 is 2706.9386434513

Scales and comparisons

• 19,835,138,439 seconds is equal to 630 years, 36 weeks, 1 day, 8 hours, 40 minutes, 39 seconds.
• To count from 1 to 19,835,138,439 would take you about one thousand, two hundred sixty-one 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 19835138439 cubic inches would be around 225.6 feet tall.

Recreational maths with 19835138439

• 19835138439 backwards is 93483153891
• The number of decimal digits it has is: 11
• The sum of 19835138439's digits is 54
• More coming soon!