164621144 has 16 divisors (see below), whose sum is σ = 313272600. Its totient is φ = 81081792.

The previous prime is 164621117. The next prime is 164621179. The reversal of 164621144 is 441126461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153029 + ... + 154100.

Almost surely, 2^164621144 is an apocalyptic number.

It is an amenable number.

164621144 is a deficient number, since it is larger than the sum of its proper divisors (148651456).

164621144 is a wasteful number, since it uses less digits than its factorization.

164621144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307202 (or 307198 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 164621144 is about 12830.4771540267. The cubic root of 164621144 is about 548.0605452845.

The spelling of 164621144 in words is "one hundred sixty-four million, six hundred twenty-one thousand, one hundred forty-four".