18163222 has 64 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 6750240.

The previous prime is 18163207. The next prime is 18163247. The reversal of 18163222 is 22236181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218793 + ... + 218875.

It is an arithmetic number, because the mean of its divisors is an integer number (567000).

Almost surely, 2^18163222 is an apocalyptic number.

18163222 is a deficient number, since it is larger than the sum of its proper divisors (18124778).

18163222 is a wasteful number, since it uses less digits than its factorization.

18163222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 132 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 18163222 is about 4261.8331736472. The cubic root of 18163222 is about 262.8639100844.

The spelling of 18163222 in words is "eighteen million, one hundred sixty-three thousand, two hundred twenty-two".