198446259329 has 2 divisors, whose sum is σ = 198446259330. Its totient is φ = 198446259328.

The previous prime is 198446259293. The next prime is 198446259337. The reversal of 198446259329 is 923952644891.

Together with previous prime (198446259293) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170013554929 + 28432704400 = 412327^2 + 168620^2 .

It is a cyclic number.

It is not a de Polignac number, because 198446259329 - 2⁸ = 198446259073 is a prime.

It is not a weakly prime, because it can be changed into another prime (198446279329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99223129664 + 99223129665.

It is an arithmetic number, because the mean of its divisors is an integer number (99223129665).

Almost surely, 2^198446259329 is an apocalyptic number.

It is an amenable number.

198446259329 is a deficient number, since it is larger than the sum of its proper divisors (1).

198446259329 is an equidigital number, since it uses as much as digits as its factorization.

198446259329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33592320, while the sum is 62.

The spelling of 198446259329 in words is "one hundred ninety-eight billion, four hundred forty-six million, two hundred fifty-nine thousand, three hundred twenty-nine".