198067171 has 2 divisors, whose sum is σ = 198067172. Its totient is φ = 198067170.

The previous prime is 198067169. The next prime is 198067223. The reversal of 198067171 is 171760891.

It is a weak prime.

It is an emirp because it is prime and its reverse (171760891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198067171 - 2¹ = 198067169 is a prime.

Together with 198067169, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198067271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99033585 + 99033586.

It is an arithmetic number, because the mean of its divisors is an integer number (99033586).

Almost surely, 2^198067171 is an apocalyptic number.

198067171 is a deficient number, since it is larger than the sum of its proper divisors (1).

198067171 is an equidigital number, since it uses as much as digits as its factorization.

198067171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 40.

The square root of 198067171 is about 14073.6338946272. The cubic root of 198067171 is about 582.9135707398.

The spelling of 198067171 in words is "one hundred ninety-eight million, sixty-seven thousand, one hundred seventy-one".