198528079 has 2 divisors, whose sum is σ = 198528080. Its totient is φ = 198528078.

The previous prime is 198528067. The next prime is 198528137. The reversal of 198528079 is 970825891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198528079 - 2¹⁹ = 198003791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198528049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99264039 + 99264040.

It is an arithmetic number, because the mean of its divisors is an integer number (99264040).

Almost surely, 2^198528079 is an apocalyptic number.

198528079 is a deficient number, since it is larger than the sum of its proper divisors (1).

198528079 is an equidigital number, since it uses as much as digits as its factorization.

198528079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 49.

The square root of 198528079 is about 14089.9992547906. Note that the first 3 decimals coincide. The cubic root of 198528079 is about 583.3653726801.

The spelling of 198528079 in words is "one hundred ninety-eight million, five hundred twenty-eight thousand, seventy-nine".