18412223 has 4 divisors (see below), whose sum is σ = 18430608. Its totient is φ = 18393840.

The previous prime is 18412201. The next prime is 18412237. The reversal of 18412223 is 32221481.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18412223 - 2¹⁰ = 18411199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18412523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7598 + ... + 9723.

It is an arithmetic number, because the mean of its divisors is an integer number (4607652).

Almost surely, 2^18412223 is an apocalyptic number.

18412223 is a deficient number, since it is larger than the sum of its proper divisors (18385).

18412223 is a wasteful number, since it uses less digits than its factorization.

18412223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18384.

The product of its digits is 768, while the sum is 23.

The square root of 18412223 is about 4290.9466321547. The cubic root of 18412223 is about 264.0596695167.

The spelling of 18412223 in words is "eighteen million, four hundred twelve thousand, two hundred twenty-three".