198049241017 has 4 divisors (see below), whose sum is σ = 204878525220. Its totient is φ = 191219956816.

The previous prime is 198049240981. The next prime is 198049241081. The reversal of 198049241017 is 710142940891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 710142940891 = 2579 ⋅275355929.

It can be written as a sum of positive squares in 2 ways, for example, as 149230780416 + 48818460601 = 386304^2 + 220949^2 .

It is a cyclic number.

It is not a de Polignac number, because 198049241017 - 2¹⁹ = 198048716729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198049241617) 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, 3414642058 + ... + 3414642115.

It is an arithmetic number, because the mean of its divisors is an integer number (51219631305).

Almost surely, 2^198049241017 is an apocalyptic number.

It is an amenable number.

198049241017 is a deficient number, since it is larger than the sum of its proper divisors (6829284203).

198049241017 is an equidigital number, since it uses as much as digits as its factorization.

198049241017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6829284202.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 198049241017 in words is "one hundred ninety-eight billion, forty-nine million, two hundred forty-one thousand, seventeen".