18322194 has 48 divisors (see below), whose sum is σ = 42245280. Its totient is φ = 5253120.

The previous prime is 18322193. The next prime is 18322217. The reversal of 18322194 is 49122381.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18322193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23442 + ... + 24210.

It is an arithmetic number, because the mean of its divisors is an integer number (880110).

Almost surely, 2^18322194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18322194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21122640).

18322194 is an abundant number, since it is smaller than the sum of its proper divisors (23923086).

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

18322194 is a wasteful number, since it uses less digits than its factorization.

18322194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823 (or 804 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 18322194 is about 4280.4432013519. The cubic root of 18322194 is about 263.6285812353.

It can be divided in two parts, 183221 and 94, that added together give a triangular number (183315 = T₆₀₅).

The spelling of 18322194 in words is "eighteen million, three hundred twenty-two thousand, one hundred ninety-four".