163952564 has 6 divisors (see below), whose sum is σ = 286916994. Its totient is φ = 81976280.

The previous prime is 163952549. The next prime is 163952603. The reversal of 163952564 is 465259361.

It can be written as a sum of positive squares in only one way, i.e., 126742564 + 37210000 = 11258^2 + 6100^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20494067 + ... + 20494074.

It is an arithmetic number, because the mean of its divisors is an integer number (47819499).

Almost surely, 2^163952564 is an apocalyptic number.

It is an amenable number.

163952564 is a deficient number, since it is larger than the sum of its proper divisors (122964430).

163952564 is a wasteful number, since it uses less digits than its factorization.

163952564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40988145 (or 40988143 counting only the distinct ones).

The product of its digits is 194400, while the sum is 41.

The square root of 163952564 is about 12804.3962762795. The cubic root of 163952564 is about 547.3175878771.

The spelling of 163952564 in words is "one hundred sixty-three million, nine hundred fifty-two thousand, five hundred sixty-four".