18322542 has 24 divisors (see below), whose sum is σ = 45370416. Its totient is φ = 5234976.

The previous prime is 18322537. The next prime is 18322547. The reversal of 18322542 is 24522381.

It is an interprime number because it is at equal distance from previous prime (18322537) and next prime (18322547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18322547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72583 + ... + 72834.

It is an arithmetic number, because the mean of its divisors is an integer number (1890434).

Almost surely, 2^18322542 is an apocalyptic number.

18322542 is an abundant number, since it is smaller than the sum of its proper divisors (27047874).

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

18322542 is a wasteful number, since it uses less digits than its factorization.

18322542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145432 (or 145429 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 18322542 is about 4280.4838511551. The cubic root of 18322542 is about 263.6302502888.

The spelling of 18322542 in words is "eighteen million, three hundred twenty-two thousand, five hundred forty-two".