198108805539 has 8 divisors (see below), whose sum is σ = 264227400720. Its totient is φ = 132031373696.

The previous prime is 198108805529. The next prime is 198108805589. The reversal of 198108805539 is 935508801891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198108805539 - 2⁸ = 198108805283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198108805529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10279602 + ... + 10298855.

It is an arithmetic number, because the mean of its divisors is an integer number (33028425090).

Almost surely, 2^198108805539 is an apocalyptic number.

198108805539 is a deficient number, since it is larger than the sum of its proper divisors (66118595181).

198108805539 is a wasteful number, since it uses less digits than its factorization.

198108805539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20581669.

The product of its (nonzero) digits is 3110400, while the sum is 57.

The spelling of 198108805539 in words is "one hundred ninety-eight billion, one hundred eight million, eight hundred five thousand, five hundred thirty-nine".