161513564 has 12 divisors (see below), whose sum is σ = 282740304. Its totient is φ = 80730624.

The previous prime is 161513563. The next prime is 161513581. The reversal of 161513564 is 465315161.

It is a self number, because there is not a number n which added to its sum of digits gives 161513564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161513563) 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, 15929 + ... + 24015.

It is an arithmetic number, because the mean of its divisors is an integer number (23561692).

Almost surely, 2^161513564 is an apocalyptic number.

It is an amenable number.

161513564 is a deficient number, since it is larger than the sum of its proper divisors (121226740).

161513564 is a wasteful number, since it uses less digits than its factorization.

161513564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13084 (or 13082 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 161513564 is about 12708.7986843761. The cubic root of 161513564 is about 544.5900055920.

The spelling of 161513564 in words is "one hundred sixty-one million, five hundred thirteen thousand, five hundred sixty-four".