18338187822 has 16 divisors (see below), whose sum is σ = 38271000960. Its totient is φ = 5846958392.

The previous prime is 18338187817. The next prime is 18338187853. The reversal of 18338187822 is 22878183381.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66442572 + ... + 66442847.

It is an arithmetic number, because the mean of its divisors is an integer number (2391937560).

Almost surely, 2^18338187822 is an apocalyptic number.

18338187822 is an abundant number, since it is smaller than the sum of its proper divisors (19932813138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18338187822 is a wasteful number, since it uses less digits than its factorization.

18338187822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132885447.

The product of its digits is 1032192, while the sum is 51.

The spelling of 18338187822 in words is "eighteen billion, three hundred thirty-eight million, one hundred eighty-seven thousand, eight hundred twenty-two".