15964161 has 32 divisors (see below), whose sum is σ = 23500800. Its totient is φ = 9604800.

The previous prime is 15964159. The next prime is 15964187. The reversal of 15964161 is 16146951.

It is not a de Polignac number, because 15964161 - 2¹ = 15964159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15964121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158011 + ... + 158111.

It is an arithmetic number, because the mean of its divisors is an integer number (734400).

Almost surely, 2^15964161 is an apocalyptic number.

It is an amenable number.

15964161 is a deficient number, since it is larger than the sum of its proper divisors (7536639).

15964161 is a wasteful number, since it uses less digits than its factorization.

15964161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229.

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

The square root of 15964161 is about 3995.5176135264. The cubic root of 15964161 is about 251.7959263673.

The spelling of 15964161 in words is "fifteen million, nine hundred sixty-four thousand, one hundred sixty-one".