18679677338 has 32 divisors (see below), whose sum is σ = 32266684800. Its totient is φ = 7944580800.

The previous prime is 18679677329. The next prime is 18679677371. The reversal of 18679677338 is 83377697681.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2710445 + ... + 2717327.

It is an arithmetic number, because the mean of its divisors is an integer number (1008333900).

Almost surely, 2^18679677338 is an apocalyptic number.

18679677338 is a deficient number, since it is larger than the sum of its proper divisors (13587007462).

18679677338 is a wasteful number, since it uses less digits than its factorization.

18679677338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8342.

The product of its digits is 64012032, while the sum is 65.

The spelling of 18679677338 in words is "eighteen billion, six hundred seventy-nine million, six hundred seventy-seven thousand, three hundred thirty-eight".