198271529 has 2 divisors, whose sum is σ = 198271530. Its totient is φ = 198271528.

The previous prime is 198271501. The next prime is 198271543. The reversal of 198271529 is 925172891.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145853929 + 52417600 = 12077^2 + 7240^2 .

It is an emirp because it is prime and its reverse (925172891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198271529 - 2⁸ = 198271273 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198271529.

It is not a weakly prime, because it can be changed into another prime (198271429) 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, 99135764 + 99135765.

It is an arithmetic number, because the mean of its divisors is an integer number (99135765).

Almost surely, 2^198271529 is an apocalyptic number.

It is an amenable number.

198271529 is a deficient number, since it is larger than the sum of its proper divisors (1).

198271529 is an equidigital number, since it uses as much as digits as its factorization.

198271529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 44.

The square root of 198271529 is about 14080.8923367804. The cubic root of 198271529 is about 583.1139776784.

The spelling of 198271529 in words is "one hundred ninety-eight million, two hundred seventy-one thousand, five hundred twenty-nine".