198434963 has 2 divisors, whose sum is σ = 198434964. Its totient is φ = 198434962.

The previous prime is 198434927. The next prime is 198434983. The reversal of 198434963 is 369434891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198434963 - 2²² = 194240659 is a prime.

It is a super-2 number, since 2×198434963² = 78752869081622738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (198434903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99217481 + 99217482.

It is an arithmetic number, because the mean of its divisors is an integer number (99217482).

Almost surely, 2^198434963 is an apocalyptic number.

198434963 is a deficient number, since it is larger than the sum of its proper divisors (1).

198434963 is an equidigital number, since it uses as much as digits as its factorization.

198434963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 198434963 is about 14086.6945377544. The cubic root of 198434963 is about 583.2741527626.

The spelling of 198434963 in words is "one hundred ninety-eight million, four hundred thirty-four thousand, nine hundred sixty-three".