18331122 has 8 divisors (see below), whose sum is σ = 36662256. Its totient is φ = 6110372.

The previous prime is 18331109. The next prime is 18331127. The reversal of 18331122 is 22113381.

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

18331122 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18331127) 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, 1527588 + ... + 1527599.

It is an arithmetic number, because the mean of its divisors is an integer number (4582782).

Almost surely, 2^18331122 is an apocalyptic number.

18331122 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.

18331122 is a wasteful number, since it uses less digits than its factorization.

18331122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055192.

The product of its digits is 288, while the sum is 21.

The square root of 18331122 is about 4281.4859570014. The cubic root of 18331122 is about 263.6713944082.

The spelling of 18331122 in words is "eighteen million, three hundred thirty-one thousand, one hundred twenty-two".