18694257875 has 8 divisors (see below), whose sum is σ = 23330433984. Its totient is φ = 14955406200.

The previous prime is 18694257839. The next prime is 18694257889. The reversal of 18694257875 is 57875249681.

It is not a de Polignac number, because 18694257875 - 2¹⁰ = 18694256851 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74776907 + ... + 74777156.

It is an arithmetic number, because the mean of its divisors is an integer number (2916304248).

Almost surely, 2^18694257875 is an apocalyptic number.

18694257875 is a deficient number, since it is larger than the sum of its proper divisors (4636176109).

18694257875 is an equidigital number, since it uses as much as digits as its factorization.

18694257875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149554078 (or 149554068 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 62.

The spelling of 18694257875 in words is "eighteen billion, six hundred ninety-four million, two hundred fifty-seven thousand, eight hundred seventy-five".