163161564 has 48 divisors (see below), whose sum is σ = 395488800. Its totient is φ = 52310016.

The previous prime is 163161553. The next prime is 163161571. The reversal of 163161564 is 465161361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37452 + ... + 41580.

It is an arithmetic number, because the mean of its divisors is an integer number (8239350).

Almost surely, 2^163161564 is an apocalyptic number.

It is an amenable number.

163161564 is an abundant number, since it is smaller than the sum of its proper divisors (232327236).

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

163161564 is a wasteful number, since it uses less digits than its factorization.

163161564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262 (or 4260 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 163161564 is about 12773.4711022494. The cubic root of 163161564 is about 546.4359785793.

The spelling of 163161564 in words is "one hundred sixty-three million, one hundred sixty-one thousand, five hundred sixty-four".