64188164 has 12 divisors (see below), whose sum is σ = 114941904. Its totient is φ = 31347624.

The previous prime is 64188139. The next prime is 64188169. The reversal of 64188164 is 46188146.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (64188169) 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, 186422 + ... + 186765.

It is an arithmetic number, because the mean of its divisors is an integer number (9578492).

Almost surely, 2^64188164 is an apocalyptic number.

It is an amenable number.

64188164 is a deficient number, since it is larger than the sum of its proper divisors (50753740).

64188164 is a wasteful number, since it uses less digits than its factorization.

64188164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373234 (or 373232 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 64188164 is about 8011.7516187161. The cubic root of 64188164 is about 400.3916247833.

The spelling of 64188164 in words is "sixty-four million, one hundred eighty-eight thousand, one hundred sixty-four".