18674 has 4 divisors (see below), whose sum is σ = 28014. Its totient is φ = 9336.

The previous prime is 18671. The next prime is 18679. The reversal of 18674 is 47681.

18674 is nontrivially palindromic in base 3.

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., 11449 + 7225 = 107^2 + 85^2 .

It is a plaindrome in base 15.

It is a nialpdrome in base 12 and base 13.

It is not an unprimeable number, because it can be changed into a prime (18671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4667 + ... + 4670.

2¹⁸⁶⁷⁴ is an apocalyptic number.

18674 is a deficient number, since it is larger than the sum of its proper divisors (9340).

18674 is an equidigital number, since it uses as much as digits as its factorization.

18674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339.

The product of its digits is 1344, while the sum is 26.

The square root of 18674 is about 136.6528448295. The cubic root of 18674 is about 26.5305213779.

The spelling of 18674 in words is "eighteen thousand, six hundred seventy-four".