18498 has 8 divisors (see below), whose sum is σ = 37008. Its totient is φ = 6164.

The previous prime is 18493. The next prime is 18503. The reversal of 18498 is 89481.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18493) and next prime (18503).

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

18498 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18493) by changing a digit.

18498 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1536 + ... + 1547.

It is an arithmetic number, because the mean of its divisors is an integer number (4626).

2¹⁸⁴⁹⁸ is an apocalyptic number.

18498 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18504).

18498 is a wasteful number, since it uses less digits than its factorization.

18498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088.

The product of its digits is 2304, while the sum is 30.

The square root of 18498 is about 136.0073527424. The cubic root of 18498 is about 26.4469092530.

Adding to 18498 its sum of digits (30), we get a triangular number (18528 = T₁₉₂).

Adding to 18498 its product of digits (2304), we get a palindrome (20802).

It can be divided in two parts, 184 and 98, that added together give a palindrome (282).

The spelling of 18498 in words is "eighteen thousand, four hundred ninety-eight".