18679627172 has 24 divisors (see below), whose sum is σ = 33729072384. Its totient is φ = 9046847232.

The previous prime is 18679627159. The next prime is 18679627177. The reversal of 18679627172 is 27172697681.

It is not an unprimeable number, because it can be changed into a prime (18679627177) 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 7 ways as a sum of consecutive naturals, for example, 493928 + ... + 530399.

It is an arithmetic number, because the mean of its divisors is an integer number (1405378016).

Almost surely, 2^18679627172 is an apocalyptic number.

It is an amenable number.

18679627172 is a deficient number, since it is larger than the sum of its proper divisors (15049445212).

18679627172 is a wasteful number, since it uses less digits than its factorization.

18679627172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024475 (or 1024473 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 56.

The spelling of 18679627172 in words is "eighteen billion, six hundred seventy-nine million, six hundred twenty-seven thousand, one hundred seventy-two".