18459205968 has 40 divisors (see below), whose sum is σ = 54498609088. Its totient is φ = 5274058752.

The previous prime is 18459205927. The next prime is 18459205981. The reversal of 18459205968 is 86950295481.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27468721 + ... + 27469392.

Almost surely, 2^18459205968 is an apocalyptic number.

It is an amenable number.

18459205968 is an abundant number, since it is smaller than the sum of its proper divisors (36039403120).

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

18459205968 is a wasteful number, since it uses less digits than its factorization.

18459205968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54938131 (or 54938125 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 57.

The spelling of 18459205968 in words is "eighteen billion, four hundred fifty-nine million, two hundred five thousand, nine hundred sixty-eight".