198445271 has 2 divisors, whose sum is σ = 198445272. Its totient is φ = 198445270.

The previous prime is 198445249. The next prime is 198445283. The reversal of 198445271 is 172544891.

198445271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198445271 - 2¹⁴ = 198428887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198445201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99222635 + 99222636.

It is an arithmetic number, because the mean of its divisors is an integer number (99222636).

Almost surely, 2^198445271 is an apocalyptic number.

198445271 is a deficient number, since it is larger than the sum of its proper divisors (1).

198445271 is an equidigital number, since it uses as much as digits as its factorization.

198445271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 41.

The square root of 198445271 is about 14087.0604101778. The cubic root of 198445271 is about 583.2842522696.

The spelling of 198445271 in words is "one hundred ninety-eight million, four hundred forty-five thousand, two hundred seventy-one".