18340339 has 8 divisors (see below), whose sum is σ = 19351440. Its totient is φ = 17333856.

The previous prime is 18340307. The next prime is 18340349. The reversal of 18340339 is 93304381.

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 18340339 - 2⁵ = 18340307 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 18340339.

It is not an unprimeable number, because it can be changed into a prime (18340349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9717 + ... + 11449.

It is an arithmetic number, because the mean of its divisors is an integer number (2418930).

Almost surely, 2^18340339 is an apocalyptic number.

18340339 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18340339 is a deficient number, since it is larger than the sum of its proper divisors (1011101).

18340339 is a wasteful number, since it uses less digits than its factorization.

18340339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 18340339 is about 4282.5622003656. The cubic root of 18340339 is about 263.7155788657.

The spelling of 18340339 in words is "eighteen million, three hundred forty thousand, three hundred thirty-nine".