198894967 has 2 divisors, whose sum is σ = 198894968. Its totient is φ = 198894966.

The previous prime is 198894923. The next prime is 198894989. The reversal of 198894967 is 769498891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198894967 - 2¹¹ = 198892919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198804967) 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, 99447483 + 99447484.

It is an arithmetic number, because the mean of its divisors is an integer number (99447484).

Almost surely, 2^198894967 is an apocalyptic number.

198894967 is a deficient number, since it is larger than the sum of its proper divisors (1).

198894967 is an equidigital number, since it uses as much as digits as its factorization.

198894967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 61.

The square root of 198894967 is about 14103.0126923293. The cubic root of 198894967 is about 583.7245125490.

The spelling of 198894967 in words is "one hundred ninety-eight million, eight hundred ninety-four thousand, nine hundred sixty-seven".