18419222 has 8 divisors (see below), whose sum is σ = 28271496. Its totient is φ = 8995392.

The previous prime is 18419221. The next prime is 18419243. The reversal of 18419222 is 22291481.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18419221) 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, 107003 + ... + 107174.

It is an arithmetic number, because the mean of its divisors is an integer number (3533937).

Almost surely, 2^18419222 is an apocalyptic number.

18419222 is a deficient number, since it is larger than the sum of its proper divisors (9852274).

18419222 is a wasteful number, since it uses less digits than its factorization.

18419222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214222.

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

The square root of 18419222 is about 4291.7621089711. The cubic root of 18419222 is about 264.0931240956.

The spelling of 18419222 in words is "eighteen million, four hundred nineteen thousand, two hundred twenty-two".