18708039453 has 32 divisors (see below), whose sum is σ = 26729554176. Its totient is φ = 11597488128.

The previous prime is 18708039421. The next prime is 18708039479. The reversal of 18708039453 is 35493080781.

It is not a de Polignac number, because 18708039453 - 2⁵ = 18708039421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18708039353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2396725 + ... + 2404517.

It is an arithmetic number, because the mean of its divisors is an integer number (835298568).

Almost surely, 2^18708039453 is an apocalyptic number.

It is an amenable number.

18708039453 is a deficient number, since it is larger than the sum of its proper divisors (8021514723).

18708039453 is a wasteful number, since it uses less digits than its factorization.

18708039453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8373.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 18708039453 in words is "eighteen billion, seven hundred eight million, thirty-nine thousand, four hundred fifty-three".