18185375392 has 12 divisors (see below), whose sum is σ = 35802457866. Its totient is φ = 9092687680.

The previous prime is 18185375387. The next prime is 18185375441. The reversal of 18185375392 is 29357358181.

It can be written as a sum of positive squares in only one way, i.e., 12373447696 + 5811927696 = 111236^2 + 76236^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284146459 + ... + 284146522.

Almost surely, 2^18185375392 is an apocalyptic number.

It is an amenable number.

18185375392 is a deficient number, since it is larger than the sum of its proper divisors (17617082474).

18185375392 is an equidigital number, since it uses as much as digits as its factorization.

18185375392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568292991 (or 568292983 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 52.

The spelling of 18185375392 in words is "eighteen billion, one hundred eighty-five million, three hundred seventy-five thousand, three hundred ninety-two".