18648907612 has 6 divisors (see below), whose sum is σ = 32635588328. Its totient is φ = 9324453804.

The previous prime is 18648907597. The next prime is 18648907621. The reversal of 18648907612 is 21670984681.

It is a self number, because there is not a number n which added to its sum of digits gives 18648907612.

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, 2331113448 + ... + 2331113455.

Almost surely, 2^18648907612 is an apocalyptic number.

It is an amenable number.

18648907612 is a deficient number, since it is larger than the sum of its proper divisors (13986680716).

18648907612 is a wasteful number, since it uses less digits than its factorization.

18648907612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662226907 (or 4662226905 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 18648907612 in words is "eighteen billion, six hundred forty-eight million, nine hundred seven thousand, six hundred twelve".