164664186 has 16 divisors (see below), whose sum is σ = 329712768. Its totient is φ = 54824000.

The previous prime is 164664179. The next prime is 164664187. The reversal of 164664186 is 681466461.

164664186 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164664186² = 54228588302085192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164664187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10290 + ... + 20861.

It is an arithmetic number, because the mean of its divisors is an integer number (20607048).

Almost surely, 2^164664186 is an apocalyptic number.

164664186 is an abundant number, since it is smaller than the sum of its proper divisors (165048582).

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

164664186 is a wasteful number, since it uses less digits than its factorization.

164664186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32037.

The product of its digits is 165888, while the sum is 42.

The square root of 164664186 is about 12832.1543787472. The cubic root of 164664186 is about 548.1083065983.

The spelling of 164664186 in words is "one hundred sixty-four million, six hundred sixty-four thousand, one hundred eighty-six".