18979200678 has 32 divisors (see below), whose sum is σ = 39057580512. Its totient is φ = 6145568000.

The previous prime is 18979200641. The next prime is 18979200679. The reversal of 18979200678 is 87600297981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18979200679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263343 + ... + 327578.

It is an arithmetic number, because the mean of its divisors is an integer number (1220549391).

Almost surely, 2^18979200678 is an apocalyptic number.

18979200678 is an abundant number, since it is smaller than the sum of its proper divisors (20078379834).

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

18979200678 is a wasteful number, since it uses less digits than its factorization.

18979200678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591080.

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 18979200678 in words is "eighteen billion, nine hundred seventy-nine million, two hundred thousand, six hundred seventy-eight".