198529459 has 2 divisors, whose sum is σ = 198529460. Its totient is φ = 198529458.

The previous prime is 198529453. The next prime is 198529469. The reversal of 198529459 is 954925891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198529459 - 2²³ = 190140851 is a prime.

It is not a weakly prime, because it can be changed into another prime (198529453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99264729 + 99264730.

It is an arithmetic number, because the mean of its divisors is an integer number (99264730).

Almost surely, 2^198529459 is an apocalyptic number.

198529459 is a deficient number, since it is larger than the sum of its proper divisors (1).

198529459 is an equidigital number, since it uses as much as digits as its factorization.

198529459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 52.

The square root of 198529459 is about 14090.0482256094. The cubic root of 198529459 is about 583.3667243652.

The spelling of 198529459 in words is "one hundred ninety-eight million, five hundred twenty-nine thousand, four hundred fifty-nine".