164188061 has 16 divisors (see below), whose sum is σ = 173124864. Its totient is φ = 155549184.

The previous prime is 164188043. The next prime is 164188069. The reversal of 164188061 is 160881461.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164188061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164188069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276581 + ... + 277173.

It is an arithmetic number, because the mean of its divisors is an integer number (10820304).

Almost surely, 2^164188061 is an apocalyptic number.

It is an amenable number.

164188061 is a deficient number, since it is larger than the sum of its proper divisors (8936803).

164188061 is a wasteful number, since it uses less digits than its factorization.

164188061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 164188061 is about 12813.5889195806. The cubic root of 164188061 is about 547.5795132045.

The spelling of 164188061 in words is "one hundred sixty-four million, one hundred eighty-eight thousand, sixty-one".