18747330393904 has 20 divisors (see below), whose sum is σ = 41511945872464. Its totient is φ = 8034570168768.

The previous prime is 18747330393817. The next prime is 18747330393929. The reversal of 18747330393904 is 40939303374781.

It is a super-2 number, since 2×18747330393904² (a number of 27 digits) contains 22 as substring.

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, 83693439147 + ... + 83693439370.

Almost surely, 2^{18747330393904} is an apocalyptic number.

18747330393904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18747330393904 is an abundant number, since it is smaller than the sum of its proper divisors (22764615478560).

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

18747330393904 is a wasteful number, since it uses less digits than its factorization.

18747330393904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167386878532 (or 167386878526 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 61.

The spelling of 18747330393904 in words is "eighteen trillion, seven hundred forty-seven billion, three hundred thirty million, three hundred ninety-three thousand, nine hundred four".