8156913 has 4 divisors (see below), whose sum is σ = 10875888. Its totient is φ = 5437940.

The previous prime is 8156903. The next prime is 8156933. The reversal of 8156913 is 3196518.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8156913 - 2⁶ = 8156849 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8156903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1359483 + ... + 1359488.

It is an arithmetic number, because the mean of its divisors is an integer number (2718972).

Almost surely, 2^8156913 is an apocalyptic number.

It is an amenable number.

8156913 is a deficient number, since it is larger than the sum of its proper divisors (2718975).

8156913 is a wasteful number, since it uses less digits than its factorization.

8156913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718974.

The product of its digits is 6480, while the sum is 33.

The square root of 8156913 is about 2856.0309872269. The cubic root of 8156913 is about 201.2991510930.

The spelling of 8156913 in words is "eight million, one hundred fifty-six thousand, nine hundred thirteen".