18689027474 has 16 divisors (see below), whose sum is σ = 31163838720. Its totient is φ = 8347456080.

The previous prime is 18689027447. The next prime is 18689027491. The reversal of 18689027474 is 47472098681.

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, 11592884 + ... + 11594495.

It is an arithmetic number, because the mean of its divisors is an integer number (1947739920).

Almost surely, 2^18689027474 is an apocalyptic number.

18689027474 is a deficient number, since it is larger than the sum of its proper divisors (12474811246).

18689027474 is a wasteful number, since it uses less digits than its factorization.

18689027474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23187425.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 18689027474 in words is "eighteen billion, six hundred eighty-nine million, twenty-seven thousand, four hundred seventy-four".