18687426875 has 40 divisors (see below), whose sum is σ = 25186162848. Its totient is φ = 13779072000.

The previous prime is 18687426871. The next prime is 18687426881. The reversal of 18687426875 is 57862478681.

It is not a de Polignac number, because 18687426875 - 2² = 18687426871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18687426871) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7205579 + ... + 7208171.

Almost surely, 2^18687426875 is an apocalyptic number.

18687426875 is a deficient number, since it is larger than the sum of its proper divisors (6498735973).

18687426875 is an equidigital number, since it uses as much as digits as its factorization.

18687426875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3513 (or 3498 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 62.

The spelling of 18687426875 in words is "eighteen billion, six hundred eighty-seven million, four hundred twenty-six thousand, eight hundred seventy-five".