164385947 has 8 divisors (see below), whose sum is σ = 183501120. Its totient is φ = 145965960.

The previous prime is 164385943. The next prime is 164385953. The reversal of 164385947 is 749583461.

164385947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164385947 - 2² = 164385943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164385941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173297 + ... + 174242.

It is an arithmetic number, because the mean of its divisors is an integer number (22937640).

Almost surely, 2^164385947 is an apocalyptic number.

164385947 is a deficient number, since it is larger than the sum of its proper divisors (19115173).

164385947 is a wasteful number, since it uses less digits than its factorization.

164385947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347593.

The product of its digits is 725760, while the sum is 47.

The square root of 164385947 is about 12821.3083185765. The cubic root of 164385947 is about 547.7994131076.

The spelling of 164385947 in words is "one hundred sixty-four million, three hundred eighty-five thousand, nine hundred forty-seven".