18222339 has 8 divisors (see below), whose sum is σ = 24316240. Its totient is φ = 12138336.

The previous prime is 18222331. The next prime is 18222343. The reversal of 18222339 is 93322281.

It is a happy number.

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

It is not a de Polignac number, because 18222339 - 2³ = 18222331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18222331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5469 + ... + 8145.

It is an arithmetic number, because the mean of its divisors is an integer number (3039530).

Almost surely, 2^18222339 is an apocalyptic number.

18222339 is a deficient number, since it is larger than the sum of its proper divisors (6093901).

18222339 is a wasteful number, since it uses less digits than its factorization.

18222339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949.

The product of its digits is 5184, while the sum is 30.

The square root of 18222339 is about 4268.7631698186. The cubic root of 18222339 is about 263.1487878961.

The spelling of 18222339 in words is "eighteen million, two hundred twenty-two thousand, three hundred thirty-nine".