198529342589 has 4 divisors (see below), whose sum is σ = 198537003456. Its totient is φ = 198521681724.

The previous prime is 198529342579. The next prime is 198529342631. The reversal of 198529342589 is 985243925891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 985243925891 = 29 ⋅33973928479.

It is a cyclic number.

It is not a de Polignac number, because 198529342589 - 2¹² = 198529338493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198529342579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3791429 + ... + 3843434.

It is an arithmetic number, because the mean of its divisors is an integer number (49634250864).

Almost surely, 2^198529342589 is an apocalyptic number.

It is an amenable number.

198529342589 is a deficient number, since it is larger than the sum of its proper divisors (7660867).

198529342589 is an equidigital number, since it uses as much as digits as its factorization.

198529342589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7660866.

The product of its digits is 55987200, while the sum is 65.

The spelling of 198529342589 in words is "one hundred ninety-eight billion, five hundred twenty-nine million, three hundred forty-two thousand, five hundred eighty-nine".