164188472 has 32 divisors (see below), whose sum is σ = 354417120. Its totient is φ = 69849600.

The previous prime is 164188469. The next prime is 164188511. The reversal of 164188472 is 274881461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3029 + ... + 18372.

It is an arithmetic number, because the mean of its divisors is an integer number (11075535).

Almost surely, 2^164188472 is an apocalyptic number.

It is an amenable number.

164188472 is an abundant number, since it is smaller than the sum of its proper divisors (190228648).

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

164188472 is a wasteful number, since it uses less digits than its factorization.

164188472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21551 (or 21547 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 164188472 is about 12813.6049572320. The cubic root of 164188472 is about 547.5799701094.

The spelling of 164188472 in words is "one hundred sixty-four million, one hundred eighty-eight thousand, four hundred seventy-two".