198253519 has 2 divisors, whose sum is σ = 198253520. Its totient is φ = 198253518.

The previous prime is 198253501. The next prime is 198253571. The reversal of 198253519 is 915352891.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (915352891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198253519 - 2⁹ = 198253007 is a prime.

It is a super-2 number, since 2×198253519² = 78608915591766722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198253579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99126759 + 99126760.

It is an arithmetic number, because the mean of its divisors is an integer number (99126760).

Almost surely, 2^198253519 is an apocalyptic number.

198253519 is a deficient number, since it is larger than the sum of its proper divisors (1).

198253519 is an equidigital number, since it uses as much as digits as its factorization.

198253519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 43.

The square root of 198253519 is about 14080.2528031282. The cubic root of 198253519 is about 583.0963214189.

The spelling of 198253519 in words is "one hundred ninety-eight million, two hundred fifty-three thousand, five hundred nineteen".