19498 has 4 divisors (see below), whose sum is σ = 29250. Its totient is φ = 9748.

The previous prime is 19489. The next prime is 19501. The reversal of 19498 is 89491.

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., 18769 + 729 = 137^2 + 27^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4873 + ... + 4876.

2¹⁹⁴⁹⁸ is an apocalyptic number.

19498 is a deficient number, since it is larger than the sum of its proper divisors (9752).

19498 is an equidigital number, since it uses as much as digits as its factorization.

19498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9751.

The product of its digits is 2592, while the sum is 31.

The square root of 19498 is about 139.6352391053. The cubic root of 19498 is about 26.9151428217.

It can be divided in two parts, 194 and 98, that added together give a palindrome (292).

The spelling of 19498 in words is "nineteen thousand, four hundred ninety-eight".