8156938855 has 32 divisors (see below), whose sum is σ = 10645899264. Its totient is φ = 5964005376.

The previous prime is 8156938831. The next prime is 8156938901. The reversal of 8156938855 is 5588396518.

It is a cyclic number.

It is not a de Polignac number, because 8156938855 - 2²¹ = 8154841703 is a prime.

It is a super-2 number, since 2×8156938855² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8156938855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7073959 + ... + 7075111.

It is an arithmetic number, because the mean of its divisors is an integer number (332684352).

Almost surely, 2^8156938855 is an apocalyptic number.

8156938855 is a deficient number, since it is larger than the sum of its proper divisors (2488960409).

8156938855 is a wasteful number, since it uses less digits than its factorization.

8156938855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155.

The product of its digits is 10368000, while the sum is 58.

The square root of 8156938855 is about 90315.7730133558. The cubic root of 8156938855 is about 2012.9936377905.

The spelling of 8156938855 in words is "eight billion, one hundred fifty-six million, nine hundred thirty-eight thousand, eight hundred fifty-five".