18804563338 has 16 divisors (see below), whose sum is σ = 30791850624. Its totient is φ = 8541765760.

The previous prime is 18804563279. The next prime is 18804563357. The reversal of 18804563338 is 83336540881.

It is a super-2 number, since 2×18804563338² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18804563291 and 18804563300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254695 + ... + 320122.

It is an arithmetic number, because the mean of its divisors is an integer number (1924490664).

Almost surely, 2^18804563338 is an apocalyptic number.

18804563338 is a deficient number, since it is larger than the sum of its proper divisors (11987287286).

18804563338 is a wasteful number, since it uses less digits than its factorization.

18804563338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576317.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 18804563338 in words is "eighteen billion, eight hundred four million, five hundred sixty-three thousand, three hundred thirty-eight".