8156938856 has 16 divisors (see below), whose sum is σ = 16684647840. Its totient is φ = 3707699440.

The previous prime is 8156938831. The next prime is 8156938901. The reversal of 8156938856 is 6588396518.

It is a junction number, because it is equal to n+sod(n) for n = 8156938795 and 8156938804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46346156 + ... + 46346331.

It is an arithmetic number, because the mean of its divisors is an integer number (1042790490).

Almost surely, 2^8156938856 is an apocalyptic number.

It is an amenable number.

8156938856 is an abundant number, since it is smaller than the sum of its proper divisors (8527708984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8156938856 is a wasteful number, since it uses less digits than its factorization.

8156938856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92692504 (or 92692500 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 59.

The square root of 8156938856 is about 90315.7730188919. The cubic root of 8156938856 is about 2012.9936378728.

The spelling of 8156938856 in words is "eight billion, one hundred fifty-six million, nine hundred thirty-eight thousand, eight hundred fifty-six".