388732164 has 12 divisors (see below), whose sum is σ = 907041744. Its totient is φ = 129577384.

The previous prime is 388732163. The next prime is 388732181. The reversal of 388732164 is 461237883.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×388732164² = 302225390656245792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (388732163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16197162 + ... + 16197185.

It is an arithmetic number, because the mean of its divisors is an integer number (75586812).

Almost surely, 2^388732164 is an apocalyptic number.

It is an amenable number.

388732164 is an abundant number, since it is smaller than the sum of its proper divisors (518309580).

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

388732164 is a wasteful number, since it uses less digits than its factorization.

388732164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32394354 (or 32394352 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 388732164 is about 19716.2918420275. The cubic root of 388732164 is about 729.8217892371.

The spelling of 388732164 in words is "three hundred eighty-eight million, seven hundred thirty-two thousand, one hundred sixty-four".