198205529 has 2 divisors, whose sum is σ = 198205530. Its totient is φ = 198205528.

The previous prime is 198205523. The next prime is 198205543. The reversal of 198205529 is 925502891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141610000 + 56595529 = 11900^2 + 7523^2 .

It is an emirp because it is prime and its reverse (925502891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198205529 - 2¹⁶ = 198139993 is a prime.

It is not a weakly prime, because it can be changed into another prime (198205523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99102764 + 99102765.

It is an arithmetic number, because the mean of its divisors is an integer number (99102765).

Almost surely, 2^198205529 is an apocalyptic number.

It is an amenable number.

198205529 is a deficient number, since it is larger than the sum of its proper divisors (1).

198205529 is an equidigital number, since it uses as much as digits as its factorization.

198205529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 198205529 is about 14078.5485402438. The cubic root of 198205529 is about 583.0492687851.

The spelling of 198205529 in words is "one hundred ninety-eight million, two hundred five thousand, five hundred twenty-nine".