18385183854 has 12 divisors (see below), whose sum is σ = 39834565056. Its totient is φ = 6128394612.

The previous prime is 18385183849. The next prime is 18385183867. The reversal of 18385183854 is 45838158381.

18385183854 is a `hidden beast` number, since 1 + 8 + 385 + 183 + 85 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 18385183854.

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 510699534 + ... + 510699569.

It is an arithmetic number, because the mean of its divisors is an integer number (3319547088).

Almost surely, 2^18385183854 is an apocalyptic number.

18385183854 is an abundant number, since it is smaller than the sum of its proper divisors (21449381202).

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

18385183854 is a wasteful number, since it uses less digits than its factorization.

18385183854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021399111 (or 1021399108 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 54.

The spelling of 18385183854 in words is "eighteen billion, three hundred eighty-five million, one hundred eighty-three thousand, eight hundred fifty-four".