18382028878 has 4 divisors (see below), whose sum is σ = 27573043320. Its totient is φ = 9191014438.

The previous prime is 18382028869. The next prime is 18382028893. The reversal of 18382028878 is 87882028381.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4595507218 + ... + 4595507221.

It is an arithmetic number, because the mean of its divisors is an integer number (6893260830).

Almost surely, 2^18382028878 is an apocalyptic number.

18382028878 is a deficient number, since it is larger than the sum of its proper divisors (9191014442).

18382028878 is an equidigital number, since it uses as much as digits as its factorization.

18382028878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9191014441.

The product of its (nonzero) digits is 2752512, while the sum is 55.

The spelling of 18382028878 in words is "eighteen billion, three hundred eighty-two million, twenty-eight thousand, eight hundred seventy-eight".