164375645 has 24 divisors (see below), whose sum is σ = 235669464. Its totient is φ = 109662336.

The previous prime is 164375639. The next prime is 164375657. The reversal of 164375645 is 546573461.

164375645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 38464804 + 125910841 = 6202^2 + 11221^2 .

It is not a de Polignac number, because 164375645 - 2²⁰ = 163327069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2 + ... + 18131.

It is an arithmetic number, because the mean of its divisors is an integer number (9819561).

Almost surely, 2^164375645 is an apocalyptic number.

It is an amenable number.

164375645 is a deficient number, since it is larger than the sum of its proper divisors (71293819).

164375645 is a wasteful number, since it uses less digits than its factorization.

164375645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18189 (or 18182 counting only the distinct ones).

The product of its digits is 302400, while the sum is 41.

The square root of 164375645 is about 12820.9065592102. The cubic root of 164375645 is about 547.7879694135.

The spelling of 164375645 in words is "one hundred sixty-four million, three hundred seventy-five thousand, six hundred forty-five".