198027161 has 2 divisors, whose sum is σ = 198027162. Its totient is φ = 198027160.

The previous prime is 198027119. The next prime is 198027191. The reversal of 198027161 is 161720891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173712400 + 24314761 = 13180^2 + 4931^2 .

It is a cyclic number.

It is not a de Polignac number, because 198027161 - 2¹⁴ = 198010777 is a prime.

It is not a weakly prime, because it can be changed into another prime (198027191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99013580 + 99013581.

It is an arithmetic number, because the mean of its divisors is an integer number (99013581).

Almost surely, 2^198027161 is an apocalyptic number.

It is an amenable number.

198027161 is a deficient number, since it is larger than the sum of its proper divisors (1).

198027161 is an equidigital number, since it uses as much as digits as its factorization.

198027161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 198027161 is about 14072.2123704839. The cubic root of 198027161 is about 582.8743181597.

The spelling of 198027161 in words is "one hundred ninety-eight million, twenty-seven thousand, one hundred sixty-one".