18679869338 has 32 divisors (see below), whose sum is σ = 31047848832. Its totient is φ = 8374363200.

The previous prime is 18679869337. The next prime is 18679869379. The reversal of 18679869338 is 83396897681.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18679869337) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 156203 + ... + 248513.

It is an arithmetic number, because the mean of its divisors is an integer number (970245276).

Almost surely, 2^18679869338 is an apocalyptic number.

18679869338 is a deficient number, since it is larger than the sum of its proper divisors (12367979494).

18679869338 is a wasteful number, since it uses less digits than its factorization.

18679869338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92550.

The product of its digits is 94058496, while the sum is 68.

The spelling of 18679869338 in words is "eighteen billion, six hundred seventy-nine million, eight hundred sixty-nine thousand, three hundred thirty-eight".