18708464512 has 32 divisors (see below), whose sum is σ = 38278096920. Its totient is φ = 9101412864.

The previous prime is 18708464507. The next prime is 18708464531. The reversal of 18708464512 is 21546480781.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1970398 + ... + 1979869.

Almost surely, 2^18708464512 is an apocalyptic number.

It is an amenable number.

18708464512 is an abundant number, since it is smaller than the sum of its proper divisors (19569632408).

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

18708464512 is an equidigital number, since it uses as much as digits as its factorization.

18708464512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950318 (or 3950306 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 18708464512 in words is "eighteen billion, seven hundred eight million, four hundred sixty-four thousand, five hundred twelve".