18249542 has 8 divisors (see below), whose sum is σ = 27704376. Its totient is φ = 9014752.

The previous prime is 18249529. The next prime is 18249563. The reversal of 18249542 is 24594281.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 54803 + ... + 55134.

It is an arithmetic number, because the mean of its divisors is an integer number (3463047).

Almost surely, 2^18249542 is an apocalyptic number.

18249542 is a deficient number, since it is larger than the sum of its proper divisors (9454834).

18249542 is a wasteful number, since it uses less digits than its factorization.

18249542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110022.

The product of its digits is 23040, while the sum is 35.

The square root of 18249542 is about 4271.9482674770. The cubic root of 18249542 is about 263.2796689592.

The spelling of 18249542 in words is "eighteen million, two hundred forty-nine thousand, five hundred forty-two".