164746181 has 8 divisors (see below), whose sum is σ = 167228160. Its totient is φ = 162270432.

The previous prime is 164746117. The next prime is 164746189. The reversal of 164746181 is 181647461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164746181 - 2⁶ = 164746117 is a prime.

It is a super-2 number, since 2×164746181² = 54282608308169522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164746189) 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, 92780 + ... + 94538.

It is an arithmetic number, because the mean of its divisors is an integer number (20903520).

Almost surely, 2^164746181 is an apocalyptic number.

It is an amenable number.

164746181 is a deficient number, since it is larger than the sum of its proper divisors (2481979).

164746181 is a wasteful number, since it uses less digits than its factorization.

164746181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115.

The product of its digits is 32256, while the sum is 38.

The square root of 164746181 is about 12835.3488850128. The cubic root of 164746181 is about 548.1992688653.

The spelling of 164746181 in words is "one hundred sixty-four million, seven hundred forty-six thousand, one hundred eighty-one".