18494 has 8 divisors (see below), whose sum is σ = 31728. Its totient is φ = 7920.

The previous prime is 18493. The next prime is 18503. The reversal of 18494 is 49481.

18494 is nontrivially palindromic in base 13.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 12.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18493) 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 in 3 ways as a sum of consecutive naturals, for example, 647 + ... + 674.

It is an arithmetic number, because the mean of its divisors is an integer number (3966).

2¹⁸⁴⁹⁴ is an apocalyptic number.

18494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18494 is a deficient number, since it is larger than the sum of its proper divisors (13234).

18494 is a wasteful number, since it uses less digits than its factorization.

18494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330.

The product of its digits is 1152, while the sum is 26.

The square root of 18494 is about 135.9926468600. The cubic root of 18494 is about 26.4450028259.

It can be divided in two parts, 1849 and 4, that multiplied together give a square (7396 = 86²).

The spelling of 18494 in words is "eighteen thousand, four hundred ninety-four".