18793825857 has 12 divisors (see below), whose sum is σ = 28022335744. Its totient is φ = 12125048760.

The previous prime is 18793825847. The next prime is 18793825861. The reversal of 18793825857 is 75852839781.

18793825857 is a `hidden beast` number, since 18 + 7 + 9 + 38 + 2 + 585 + 7 = 666.

It is not a de Polignac number, because 18793825857 - 2²⁷ = 18659608129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18793825794 and 18793825803.

It is not an unprimeable number, because it can be changed into a prime (18793825847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33680413 + ... + 33680970.

Almost surely, 2^18793825857 is an apocalyptic number.

It is an amenable number.

18793825857 is a deficient number, since it is larger than the sum of its proper divisors (9228509887).

18793825857 is a wasteful number, since it uses less digits than its factorization.

18793825857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67361420 (or 67361417 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 63.

The spelling of 18793825857 in words is "eighteen billion, seven hundred ninety-three million, eight hundred twenty-five thousand, eight hundred fifty-seven".