198248819 has 2 divisors, whose sum is σ = 198248820. Its totient is φ = 198248818.

The previous prime is 198248807. The next prime is 198248833. The reversal of 198248819 is 918842891.

It is a happy number.

198248819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198248819 - 2¹² = 198244723 is a prime.

It is a super-2 number, since 2×198248819² = 78605188469789522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198248839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99124409 + 99124410.

It is an arithmetic number, because the mean of its divisors is an integer number (99124410).

Almost surely, 2^198248819 is an apocalyptic number.

198248819 is a deficient number, since it is larger than the sum of its proper divisors (1).

198248819 is an equidigital number, since it uses as much as digits as its factorization.

198248819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 50.

The square root of 198248819 is about 14080.0859017266. The cubic root of 198248819 is about 583.0917135572.

The spelling of 198248819 in words is "one hundred ninety-eight million, two hundred forty-eight thousand, eight hundred nineteen".