18338542 has 8 divisors (see below), whose sum is σ = 27683496. Its totient is φ = 9110712.

The previous prime is 18338531. The next prime is 18338561. The reversal of 18338542 is 24583381.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 18338498 and 18338507.

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, 28888 + ... + 29515.

It is an arithmetic number, because the mean of its divisors is an integer number (3460437).

Almost surely, 2^18338542 is an apocalyptic number.

18338542 is a deficient number, since it is larger than the sum of its proper divisors (9344954).

18338542 is a wasteful number, since it uses less digits than its factorization.

18338542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58562.

The product of its digits is 23040, while the sum is 34.

The square root of 18338542 is about 4282.3523909179. The cubic root of 18338542 is about 263.7069655684.

The spelling of 18338542 in words is "eighteen million, three hundred thirty-eight thousand, five hundred forty-two".