198689922813 has 16 divisors (see below), whose sum is σ = 267474194496. Its totient is φ = 131184641280.

The previous prime is 198689922779. The next prime is 198689922887. The reversal of 198689922813 is 318229986891.

It is a happy number.

It is not a de Polignac number, because 198689922813 - 2⁶ = 198689922749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198689922913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203418 + ... + 662388.

It is an arithmetic number, because the mean of its divisors is an integer number (16717137156).

Almost surely, 2^198689922813 is an apocalyptic number.

It is an amenable number.

198689922813 is a deficient number, since it is larger than the sum of its proper divisors (68784271683).

198689922813 is a wasteful number, since it uses less digits than its factorization.

198689922813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460364.

The product of its digits is 26873856, while the sum is 66.

The spelling of 198689922813 in words is "one hundred ninety-eight billion, six hundred eighty-nine million, nine hundred twenty-two thousand, eight hundred thirteen".