198610799 has 2 divisors, whose sum is σ = 198610800. Its totient is φ = 198610798.

The previous prime is 198610759. The next prime is 198610801. The reversal of 198610799 is 997016891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198610799 - 2²⁰ = 197562223 is a prime.

Together with 198610801, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198610729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99305399 + 99305400.

It is an arithmetic number, because the mean of its divisors is an integer number (99305400).

Almost surely, 2^198610799 is an apocalyptic number.

198610799 is a deficient number, since it is larger than the sum of its proper divisors (1).

198610799 is an equidigital number, since it uses as much as digits as its factorization.

198610799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 50.

The square root of 198610799 is about 14092.9343644253. The cubic root of 198610799 is about 583.4463843657.

The spelling of 198610799 in words is "one hundred ninety-eight million, six hundred ten thousand, seven hundred ninety-nine".