18789222 has 8 divisors (see below), whose sum is σ = 37578456. Its totient is φ = 6263072.

The previous prime is 18789203. The next prime is 18789223. The reversal of 18789222 is 22298781.

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

18789222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18789223) 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, 1565763 + ... + 1565774.

It is an arithmetic number, because the mean of its divisors is an integer number (4697307).

Almost surely, 2^18789222 is an apocalyptic number.

18789222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18789222 is a wasteful number, since it uses less digits than its factorization.

18789222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131542.

The product of its digits is 32256, while the sum is 39.

The square root of 18789222 is about 4334.6536193795. The cubic root of 18789222 is about 265.8497559213.

The spelling of 18789222 in words is "eighteen million, seven hundred eighty-nine thousand, two hundred twenty-two".