18382339 has 4 divisors (see below), whose sum is σ = 18437224. Its totient is φ = 18327456.

The previous prime is 18382337. The next prime is 18382369. The reversal of 18382339 is 93328381.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18382339 - 2¹ = 18382337 is a prime.

It is a super-2 number, since 2×18382339² = 675820774221842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18382298 and 18382307.

It is not an unprimeable number, because it can be changed into a prime (18382337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26937 + ... + 27610.

It is an arithmetic number, because the mean of its divisors is an integer number (4609306).

Almost surely, 2^18382339 is an apocalyptic number.

18382339 is a deficient number, since it is larger than the sum of its proper divisors (54885).

18382339 is an equidigital number, since it uses as much as digits as its factorization.

18382339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54884.

The product of its digits is 31104, while the sum is 37.

The square root of 18382339 is about 4287.4630027558. The cubic root of 18382339 is about 263.9167312763.

It can be divided in two parts, 18382 and 339, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 18382339 in words is "eighteen million, three hundred eighty-two thousand, three hundred thirty-nine".