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3872168839 = 71150287907
BaseRepresentation
bin1110011011001100…
…1001101110000111
3100222212011120001201
43212303021232013
530412233400324
61440122003331
7164645614660
oct34663115607
910885146051
103872168839
111707813840
12900946547
134992b5186
1428a39a367
15179e24444
hexe6cc9b87

3872168839 has 8 divisors (see below), whose sum is σ = 4827639168. Its totient is φ = 3017274360.

The previous prime is 3872168809. The next prime is 3872168849. The reversal of 3872168839 is 9388612783.

3872168839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3872168839 - 215 = 3872136071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3872168839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3872168809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25143877 + ... + 25144030.

It is an arithmetic number, because the mean of its divisors is an integer number (603454896).

Almost surely, 23872168839 is an apocalyptic number.

3872168839 is a deficient number, since it is larger than the sum of its proper divisors (955470329).

3872168839 is a wasteful number, since it uses less digits than its factorization.

3872168839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50287925.

The product of its digits is 3483648, while the sum is 55.

The square root of 3872168839 is about 62226.7534023751. The cubic root of 3872168839 is about 1570.3077059264.

The spelling of 3872168839 in words is "three billion, eight hundred seventy-two million, one hundred sixty-eight thousand, eight hundred thirty-nine".

Divisors: 1 7 11 77 50287907 352015349 553166977 3872168839