18338245 has 8 divisors (see below), whose sum is σ = 22962816. Its totient is φ = 14032656.

The previous prime is 18338239. The next prime is 18338261. The reversal of 18338245 is 54283381.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18338245 - 2¹⁵ = 18305477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18338245.

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 7 ways as a sum of consecutive naturals, for example, 79617 + ... + 79846.

It is an arithmetic number, because the mean of its divisors is an integer number (2870352).

Almost surely, 2^18338245 is an apocalyptic number.

It is an amenable number.

18338245 is a deficient number, since it is larger than the sum of its proper divisors (4624571).

18338245 is a wasteful number, since it uses less digits than its factorization.

18338245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159491.

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

The square root of 18338245 is about 4282.3177135752. The cubic root of 18338245 is about 263.7055419476.

The spelling of 18338245 in words is "eighteen million, three hundred thirty-eight thousand, two hundred forty-five".