198805317058 has 16 divisors (see below), whose sum is σ = 299212309656. Its totient is φ = 99068313600.

The previous prime is 198805317013. The next prime is 198805317071. The reversal of 198805317058 is 850713508891.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 187526239849 + 11279077209 = 433043^2 + 106203^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817210 + ... + 1032202.

Almost surely, 2^198805317058 is an apocalyptic number.

198805317058 is a deficient number, since it is larger than the sum of its proper divisors (100406992598).

198805317058 is a wasteful number, since it uses less digits than its factorization.

198805317058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216549.

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 198805317058 in words is "one hundred ninety-eight billion, eight hundred five million, three hundred seventeen thousand, fifty-eight".