164385747 has 8 divisors (see below), whose sum is σ = 243534480. Its totient is φ = 109590480.

The previous prime is 164385737. The next prime is 164385779. The reversal of 164385747 is 747583461.

It is a de Polignac number, because none of the positive numbers 2^k-164385747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164385737) 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, 3044154 + ... + 3044207.

It is an arithmetic number, because the mean of its divisors is an integer number (30441810).

Almost surely, 2^164385747 is an apocalyptic number.

164385747 is a deficient number, since it is larger than the sum of its proper divisors (79148733).

164385747 is an equidigital number, since it uses as much as digits as its factorization.

164385747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6088370 (or 6088364 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 164385747 is about 12821.3005190581. The cubic root of 164385747 is about 547.7991909476.

The spelling of 164385747 in words is "one hundred sixty-four million, three hundred eighty-five thousand, seven hundred forty-seven".