18708905312 has 24 divisors (see below), whose sum is σ = 36841237776. Its totient is φ = 9352400512.

The previous prime is 18708905311. The next prime is 18708905317. The reversal of 18708905312 is 21350980781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18708905311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89693 + ... + 213219.

It is an arithmetic number, because the mean of its divisors is an integer number (1535051574).

Almost surely, 2^18708905312 is an apocalyptic number.

It is an amenable number.

18708905312 is a deficient number, since it is larger than the sum of its proper divisors (18132332464).

18708905312 is a wasteful number, since it uses less digits than its factorization.

18708905312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128270 (or 128262 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 18708905312 in words is "eighteen billion, seven hundred eight million, nine hundred five thousand, three hundred twelve".