18306736608 has 48 divisors (see below), whose sum is σ = 48496084560. Its totient is φ = 6046258176.

The previous prime is 18306736579. The next prime is 18306736619. The reversal of 18306736608 is 80663760381.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 864285 + ... + 885212.

It is an arithmetic number, because the mean of its divisors is an integer number (1010335095).

Almost surely, 2^18306736608 is an apocalyptic number.

It is an amenable number.

18306736608 is an abundant number, since it is smaller than the sum of its proper divisors (30189347952).

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

18306736608 is a wasteful number, since it uses less digits than its factorization.

18306736608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749619 (or 1749611 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 18306736608 in words is "eighteen billion, three hundred six million, seven hundred thirty-six thousand, six hundred eight".