164918131 has 4 divisors (see below), whose sum is σ = 188477872. Its totient is φ = 141358392.

The previous prime is 164918111. The next prime is 164918147. The reversal of 164918131 is 131819461.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 164918131 - 2¹¹ = 164916083 is a prime.

It is a super-2 number, since 2×164918131² = 54395979865066322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164918101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11779860 + ... + 11779873.

It is an arithmetic number, because the mean of its divisors is an integer number (47119468).

Almost surely, 2^164918131 is an apocalyptic number.

164918131 is a deficient number, since it is larger than the sum of its proper divisors (23559741).

164918131 is an equidigital number, since it uses as much as digits as its factorization.

164918131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23559740.

The product of its digits is 5184, while the sum is 34.

The square root of 164918131 is about 12842.0454367675. The cubic root of 164918131 is about 548.3899259675.

The spelling of 164918131 in words is "one hundred sixty-four million, nine hundred eighteen thousand, one hundred thirty-one".