18770857885 has 24 divisors (see below), whose sum is σ = 24910018560. Its totient is φ = 13566601152.

The previous prime is 18770857879. The next prime is 18770857907. The reversal of 18770857885 is 58875807781.

It is not a de Polignac number, because 18770857885 - 2²⁷ = 18636640157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196605 + ... + 276034.

It is an arithmetic number, because the mean of its divisors is an integer number (1037917440).

Almost surely, 2^18770857885 is an apocalyptic number.

It is an amenable number.

18770857885 is a deficient number, since it is larger than the sum of its proper divisors (6139160675).

18770857885 is a wasteful number, since it uses less digits than its factorization.

18770857885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472717 (or 472704 counting only the distinct ones).

The product of its (nonzero) digits is 35123200, while the sum is 64.

The spelling of 18770857885 in words is "eighteen billion, seven hundred seventy million, eight hundred fifty-seven thousand, eight hundred eighty-five".