164274445 has 16 divisors (see below), whose sum is σ = 199710720. Its totient is φ = 129708864.

The previous prime is 164274433. The next prime is 164274457. The reversal of 164274445 is 544472461.

It is an interprime number because it is at equal distance from previous prime (164274433) and next prime (164274457).

It is a cyclic number.

It is not a de Polignac number, because 164274445 - 2⁷ = 164274317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208342 + ... + 209128.

It is an arithmetic number, because the mean of its divisors is an integer number (12481920).

Almost surely, 2^164274445 is an apocalyptic number.

It is an amenable number.

164274445 is a deficient number, since it is larger than the sum of its proper divisors (35436275).

164274445 is a wasteful number, since it uses less digits than its factorization.

164274445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284.

The product of its digits is 107520, while the sum is 37.

The square root of 164274445 is about 12816.9592727761. The cubic root of 164274445 is about 547.6755287433.

The spelling of 164274445 in words is "one hundred sixty-four million, two hundred seventy-four thousand, four hundred forty-five".