18343 has 8 divisors (see below), whose sum is σ = 21168. Its totient is φ = 15744.

The previous prime is 18341. The next prime is 18353. The reversal of 18343 is 34381.

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 18343 - 2¹ = 18341 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 18343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18341) 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, 180 + ... + 262.

It is an arithmetic number, because the mean of its divisors is an integer number (2646).

2¹⁸³⁴³ is an apocalyptic number.

18343 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18343 is a deficient number, since it is larger than the sum of its proper divisors (2825).

18343 is a wasteful number, since it uses less digits than its factorization.

18343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113.

The product of its digits is 288, while the sum is 19.

The square root of 18343 is about 135.4363319054. The cubic root of 18343 is about 26.3728332414.

It can be divided in two parts, 18 and 343, that added together give a square (361 = 19²).

The spelling of 18343 in words is "eighteen thousand, three hundred forty-three".