163498 has 4 divisors (see below), whose sum is σ = 245250. Its totient is φ = 81748.

The previous prime is 163487. The next prime is 163517. The reversal of 163498 is 894361.

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., 162409 + 1089 = 403^2 + 33^2 .

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 alternating number because its digits alternate between odd and even.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40873 + ... + 40876.

2¹⁶³⁴⁹⁸ is an apocalyptic number.

163498 is a deficient number, since it is larger than the sum of its proper divisors (81752).

163498 is an equidigital number, since it uses as much as digits as its factorization.

163498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81751.

The product of its digits is 5184, while the sum is 31.

The square root of 163498 is about 404.3488592787. The cubic root of 163498 is about 54.6811300880.

The spelling of 163498 in words is "one hundred sixty-three thousand, four hundred ninety-eight".