18883579318 has 4 divisors (see below), whose sum is σ = 28325368980. Its totient is φ = 9441789658.

The previous prime is 18883579291. The next prime is 18883579331. The reversal of 18883579318 is 81397538881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81397538881 = 127 ⋅640925503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4720894828 + ... + 4720894831.

It is an arithmetic number, because the mean of its divisors is an integer number (7081342245).

Almost surely, 2^18883579318 is an apocalyptic number.

18883579318 is a deficient number, since it is larger than the sum of its proper divisors (9441789662).

18883579318 is an equidigital number, since it uses as much as digits as its factorization.

18883579318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441789661.

The product of its digits is 11612160, while the sum is 61.

The spelling of 18883579318 in words is "eighteen billion, eight hundred eighty-three million, five hundred seventy-nine thousand, three hundred eighteen".