18346 has 4 divisors (see below), whose sum is σ = 27522. Its totient is φ = 9172.

The previous prime is 18341. The next prime is 18353. The reversal of 18346 is 64381.

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

It can be written as a sum of positive squares in only one way, i.e., 18225 + 121 = 135^2 + 11^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 16.

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 as a sum of consecutive naturals, namely, 4585 + ... + 4588.

2¹⁸³⁴⁶ is an apocalyptic number.

18346 is a deficient number, since it is larger than the sum of its proper divisors (9176).

18346 is an equidigital number, since it uses as much as digits as its factorization.

18346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9175.

The product of its digits is 576, while the sum is 22.

The square root of 18346 is about 135.4474067674. The cubic root of 18346 is about 26.3742709231.

The spelling of 18346 in words is "eighteen thousand, three hundred forty-six".