18468467808 has 48 divisors (see below), whose sum is σ = 55405405440. Its totient is φ = 5276704896.

The previous prime is 18468467779. The next prime is 18468467819. The reversal of 18468467808 is 80876486481.

It is a tau number, because it is divible by the number of its divisors (48).

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, 13740748 + ... + 13742091.

It is an arithmetic number, because the mean of its divisors is an integer number (1154279280).

Almost surely, 2^18468467808 is an apocalyptic number.

It is an amenable number.

18468467808 is an abundant number, since it is smaller than the sum of its proper divisors (36936937632).

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

18468467808 is a wasteful number, since it uses less digits than its factorization.

18468467808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27482859 (or 27482851 counting only the distinct ones).

The product of its (nonzero) digits is 16515072, while the sum is 60.

The spelling of 18468467808 in words is "eighteen billion, four hundred sixty-eight million, four hundred sixty-seven thousand, eight hundred eight".