164122631 has 4 divisors (see below), whose sum is σ = 168125664. Its totient is φ = 160119600.

The previous prime is 164122613. The next prime is 164122667. The reversal of 164122631 is 136221461.

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

It is a cyclic number.

It is not a de Polignac number, because 164122631 - 2¹⁴ = 164106247 is a prime.

It is a super-2 number, since 2×164122631² = 53872476012724322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164122631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164122691) 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, 2001455 + ... + 2001536.

It is an arithmetic number, because the mean of its divisors is an integer number (42031416).

Almost surely, 2^164122631 is an apocalyptic number.

164122631 is a deficient number, since it is larger than the sum of its proper divisors (4003033).

164122631 is an equidigital number, since it uses as much as digits as its factorization.

164122631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003032.

The product of its digits is 1728, while the sum is 26.

The square root of 164122631 is about 12811.0355163039. The cubic root of 164122631 is about 547.5067655524.

The spelling of 164122631 in words is "one hundred sixty-four million, one hundred twenty-two thousand, six hundred thirty-one".