198463571 has 2 divisors, whose sum is σ = 198463572. Its totient is φ = 198463570.

The previous prime is 198463553. The next prime is 198463609. The reversal of 198463571 is 175364891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198463571 - 2¹⁰ = 198462547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (198463511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99231785 + 99231786.

It is an arithmetic number, because the mean of its divisors is an integer number (99231786).

Almost surely, 2^198463571 is an apocalyptic number.

198463571 is a deficient number, since it is larger than the sum of its proper divisors (1).

198463571 is an equidigital number, since it uses as much as digits as its factorization.

198463571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 198463571 is about 14087.7099274509. The cubic root of 198463571 is about 583.3021812661.

The spelling of 198463571 in words is "one hundred ninety-eight million, four hundred sixty-three thousand, five hundred seventy-one".