18668235874 has 8 divisors (see below), whose sum is σ = 29649551148. Its totient is φ = 8785052160.

The previous prime is 18668235869. The next prime is 18668235881. The reversal of 18668235874 is 47853286681.

It is a happy number.

18668235874 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 15251015025 + 3417220849 = 123495^2 + 58457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×18668235874³ (a number of 32 digits) contains 333 as substring.

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, 274532847 + ... + 274532914.

Almost surely, 2^18668235874 is an apocalyptic number.

18668235874 is a deficient number, since it is larger than the sum of its proper divisors (10981315274).

18668235874 is a wasteful number, since it uses less digits than its factorization.

18668235874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549065780.

The product of its digits is 15482880, while the sum is 58.

The spelling of 18668235874 in words is "eighteen billion, six hundred sixty-eight million, two hundred thirty-five thousand, eight hundred seventy-four".