164128188 has 48 divisors (see below), whose sum is σ = 443233280. Its totient is φ = 46298304.

The previous prime is 164128177. The next prime is 164128241. The reversal of 164128188 is 881821461.

164128188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 5731 + ... + 19002.

Almost surely, 2^164128188 is an apocalyptic number.

It is an amenable number.

164128188 is an abundant number, since it is smaller than the sum of its proper divisors (279105092).

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

164128188 is a wasteful number, since it uses less digits than its factorization.

164128188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24826 (or 24824 counting only the distinct ones).

The product of its digits is 24576, while the sum is 39.

The square root of 164128188 is about 12811.2523977947. The cubic root of 164128188 is about 547.5129447952.

The spelling of 164128188 in words is "one hundred sixty-four million, one hundred twenty-eight thousand, one hundred eighty-eight".