18648824808 has 16 divisors (see below), whose sum is σ = 46622062080. Its totient is φ = 6216274928.

The previous prime is 18648824797. The next prime is 18648824827. The reversal of 18648824808 is 80842884681.

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, 388517160 + ... + 388517207.

It is an arithmetic number, because the mean of its divisors is an integer number (2913878880).

Almost surely, 2^18648824808 is an apocalyptic number.

It is an amenable number.

18648824808 is an abundant number, since it is smaller than the sum of its proper divisors (27973237272).

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

18648824808 is a wasteful number, since it uses less digits than its factorization.

18648824808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777034376 (or 777034372 counting only the distinct ones).

The product of its (nonzero) digits is 6291456, while the sum is 57.

The spelling of 18648824808 in words is "eighteen billion, six hundred forty-eight million, eight hundred twenty-four thousand, eight hundred eight".