18860649368 has 16 divisors (see below), whose sum is σ = 38578601160. Its totient is φ = 8573022400.

The previous prime is 18860649331. The next prime is 18860649391. The reversal of 18860649368 is 86394606881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107162693 + ... + 107162868.

Almost surely, 2^18860649368 is an apocalyptic number.

It is an amenable number.

18860649368 is an abundant number, since it is smaller than the sum of its proper divisors (19717951792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18860649368 is a wasteful number, since it uses less digits than its factorization.

18860649368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214325578 (or 214325574 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 59.

The spelling of 18860649368 in words is "eighteen billion, eight hundred sixty million, six hundred forty-nine thousand, three hundred sixty-eight".