18164793 has 4 divisors (see below), whose sum is σ = 24219728. Its totient is φ = 12109860.

The previous prime is 18164777. The next prime is 18164801. The reversal of 18164793 is 39746181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39746181 = 3 ⋅13248727.

It is not a de Polignac number, because 18164793 - 2⁴ = 18164777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18164723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3027463 + ... + 3027468.

It is an arithmetic number, because the mean of its divisors is an integer number (6054932).

Almost surely, 2^18164793 is an apocalyptic number.

It is an amenable number.

18164793 is a deficient number, since it is larger than the sum of its proper divisors (6054935).

18164793 is an equidigital number, since it uses as much as digits as its factorization.

18164793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6054934.

The product of its digits is 36288, while the sum is 39.

The square root of 18164793 is about 4262.0174800205. The cubic root of 18164793 is about 262.8714885360.

The spelling of 18164793 in words is "eighteen million, one hundred sixty-four thousand, seven hundred ninety-three".