18244542 has 8 divisors (see below), whose sum is σ = 36489096. Its totient is φ = 6081512.

The previous prime is 18244531. The next prime is 18244559. The reversal of 18244542 is 24544281.

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

18244542 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520373 + ... + 1520384.

It is an arithmetic number, because the mean of its divisors is an integer number (4561137).

Almost surely, 2^18244542 is an apocalyptic number.

18244542 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.

18244542 is a wasteful number, since it uses less digits than its factorization.

18244542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040762.

The product of its digits is 10240, while the sum is 30.

The square root of 18244542 is about 4271.3630143082. The cubic root of 18244542 is about 263.2556223541.

The spelling of 18244542 in words is "eighteen million, two hundred forty-four thousand, five hundred forty-two".