18112838178 has 16 divisors (see below), whose sum is σ = 36662131296. Its totient is φ = 5964870240.

The previous prime is 18112838147. The next prime is 18112838197. The reversal of 18112838178 is 87183821181.

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 7 ways as a sum of consecutive naturals, for example, 18185083 + ... + 18186078.

It is an arithmetic number, because the mean of its divisors is an integer number (2291383206).

Almost surely, 2^18112838178 is an apocalyptic number.

18112838178 is an abundant number, since it is smaller than the sum of its proper divisors (18549293118).

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

18112838178 is a wasteful number, since it uses less digits than its factorization.

18112838178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36371249.

The product of its digits is 172032, while the sum is 48.

The spelling of 18112838178 in words is "eighteen billion, one hundred twelve million, eight hundred thirty-eight thousand, one hundred seventy-eight".