18745857695 has 4 divisors (see below), whose sum is σ = 22495029240. Its totient is φ = 14996686152.

The previous prime is 18745857677. The next prime is 18745857701. The reversal of 18745857695 is 59675854781.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18745857695 - 2¹⁰ = 18745856671 is a prime.

It is a congruent number.

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, 1874585765 + ... + 1874585774.

It is an arithmetic number, because the mean of its divisors is an integer number (5623757310).

Almost surely, 2^18745857695 is an apocalyptic number.

18745857695 is a deficient number, since it is larger than the sum of its proper divisors (3749171545).

18745857695 is an equidigital number, since it uses as much as digits as its factorization.

18745857695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3749171544.

The product of its digits is 84672000, while the sum is 65.

The spelling of 18745857695 in words is "eighteen billion, seven hundred forty-five million, eight hundred fifty-seven thousand, six hundred ninety-five".