198000863 has 2 divisors, whose sum is σ = 198000864. Its totient is φ = 198000862.

The previous prime is 198000857. The next prime is 198000889. The reversal of 198000863 is 368000891.

It is a weak prime.

It is an emirp because it is prime and its reverse (368000891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198000863 - 2⁶ = 198000799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198000833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99000431 + 99000432.

It is an arithmetic number, because the mean of its divisors is an integer number (99000432).

Almost surely, 2^198000863 is an apocalyptic number.

198000863 is a deficient number, since it is larger than the sum of its proper divisors (1).

198000863 is an equidigital number, since it uses as much as digits as its factorization.

198000863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 198000863 is about 14071.2779448066. The cubic root of 198000863 is about 582.8485151211.

The spelling of 198000863 in words is "one hundred ninety-eight million, eight hundred sixty-three", and thus it is an aban number.