198461863 has 2 divisors, whose sum is σ = 198461864. Its totient is φ = 198461862.

The previous prime is 198461833. The next prime is 198461909. The reversal of 198461863 is 368164891.

It is an a-pointer prime, because the next prime (198461909) can be obtained adding 198461863 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198461863 - 2⁵ = 198461831 is a prime.

It is a super-2 number, since 2×198461863² = 78774222130861538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198461833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99230931 + 99230932.

It is an arithmetic number, because the mean of its divisors is an integer number (99230932).

Almost surely, 2^198461863 is an apocalyptic number.

198461863 is a deficient number, since it is larger than the sum of its proper divisors (1).

198461863 is an equidigital number, since it uses as much as digits as its factorization.

198461863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 46.

The square root of 198461863 is about 14087.6493071059. The cubic root of 198461863 is about 583.3005079397.

The spelling of 198461863 in words is "one hundred ninety-eight million, four hundred sixty-one thousand, eight hundred sixty-three".