18366432226 has 8 divisors (see below), whose sum is σ = 27927041004. Its totient is φ = 9057418560.

The previous prime is 18366432197. The next prime is 18366432241. The reversal of 18366432226 is 62223466381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17052442225 + 1313990001 = 130585^2 + 36249^2 .

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

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, 62898595 + ... + 62898886.

Almost surely, 2^18366432226 is an apocalyptic number.

18366432226 is a deficient number, since it is larger than the sum of its proper divisors (9560608778).

18366432226 is a wasteful number, since it uses less digits than its factorization.

18366432226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125797556.

The product of its digits is 497664, while the sum is 43.

The spelling of 18366432226 in words is "eighteen billion, three hundred sixty-six million, four hundred thirty-two thousand, two hundred twenty-six".