18222194 has 8 divisors (see below), whose sum is σ = 27358128. Its totient is φ = 9102820.

The previous prime is 18222173. The next prime is 18222223. The reversal of 18222194 is 49122281.

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, 872 + ... + 6099.

It is an arithmetic number, because the mean of its divisors is an integer number (3419766).

Almost surely, 2^18222194 is an apocalyptic number.

18222194 is a deficient number, since it is larger than the sum of its proper divisors (9135934).

18222194 is a wasteful number, since it uses less digits than its factorization.

18222194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280.

The product of its digits is 2304, while the sum is 29.

The square root of 18222194 is about 4268.7461859427. The cubic root of 18222194 is about 263.1480899126.

The spelling of 18222194 in words is "eighteen million, two hundred twenty-two thousand, one hundred ninety-four".