18222338 has 8 divisors (see below), whose sum is σ = 27352080. Its totient is φ = 9104980.

The previous prime is 18222331. The next prime is 18222343. The reversal of 18222338 is 83322281.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18222338.

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 3 ways as a sum of consecutive naturals, for example, 2933 + ... + 6711.

It is an arithmetic number, because the mean of its divisors is an integer number (3419010).

Almost surely, 2^18222338 is an apocalyptic number.

18222338 is a deficient number, since it is larger than the sum of its proper divisors (9129742).

18222338 is a wasteful number, since it uses less digits than its factorization.

18222338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6192.

The product of its digits is 4608, while the sum is 29.

The square root of 18222338 is about 4268.7630526887. The cubic root of 18222338 is about 263.1487830824.

The spelling of 18222338 in words is "eighteen million, two hundred twenty-two thousand, three hundred thirty-eight".