198503 has 2 divisors, whose sum is σ = 198504. Its totient is φ = 198502.

The previous prime is 198491. The next prime is 198529. The reversal of 198503 is 305891.

It is an a-pointer prime, because the next prime (198529) can be obtained adding 198503 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198503 - 2⁶ = 198439 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198503.

It is not a weakly prime, because it can be changed into another prime (198533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99251 + 99252.

It is an arithmetic number, because the mean of its divisors is an integer number (99252).

2¹⁹⁸⁵⁰³ is an apocalyptic number.

198503 is a deficient number, since it is larger than the sum of its proper divisors (1).

198503 is an equidigital number, since it uses as much as digits as its factorization.

198503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 198503 is about 445.5367549372. The cubic root of 198503 is about 58.3340807160.

The spelling of 198503 in words is "one hundred ninety-eight thousand, five hundred three".