3161157165 has 32 divisors (see below), whose sum is σ = 5715100800. Its totient is φ = 1657370880.

The previous prime is 3161157149. The next prime is 3161157187. The reversal of 3161157165 is 5617511613.

3161157165 is a `hidden beast` number, since 3 + 16 + 11 + 571 + 65 = 666.

It is not a de Polignac number, because 3161157165 - 2⁴ = 3161157149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190476 + ... + 206405.

It is an arithmetic number, because the mean of its divisors is an integer number (178596900).

Almost surely, 2^3161157165 is an apocalyptic number.

It is an amenable number.

3161157165 is a deficient number, since it is larger than the sum of its proper divisors (2553943635).

3161157165 is a wasteful number, since it uses less digits than its factorization.

3161157165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396954 (or 396948 counting only the distinct ones).

The product of its digits is 18900, while the sum is 36.

The square root of 3161157165 is about 56224.1688689126. The cubic root of 3161157165 is about 1467.6258845467.

Adding to 3161157165 its reverse (5617511613), we get a palindrome (8778668778).

It can be divided in two parts, 316 and 1157165, that added together give a triangular number (1157481 = T₁₅₂₁).

The spelling of 3161157165 in words is "three billion, one hundred sixty-one million, one hundred fifty-seven thousand, one hundred sixty-five".