205931164 has 6 divisors (see below), whose sum is σ = 360379544. Its totient is φ = 102965580.

The previous prime is 205931153. The next prime is 205931179. The reversal of 205931164 is 461139502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25741392 + ... + 25741399.

Almost surely, 2^205931164 is an apocalyptic number.

It is an amenable number.

205931164 is a deficient number, since it is larger than the sum of its proper divisors (154448380).

205931164 is a wasteful number, since it uses less digits than its factorization.

205931164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51482795 (or 51482793 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 205931164 is about 14350.3018783578. The cubic root of 205931164 is about 590.5282676477.

The spelling of 205931164 in words is "two hundred five million, nine hundred thirty-one thousand, one hundred sixty-four".