198122886693 has 6 divisors (see below), whose sum is σ = 286177503014. Its totient is φ = 132081924456.

The previous prime is 198122886671. The next prime is 198122886727. The reversal of 198122886693 is 396688221891.

It can be written as a sum of positive squares in only one way, i.e., 194020868484 + 4102018209 = 440478^2 + 64047^2 .

It is not a de Polignac number, because 198122886693 - 2¹⁸ = 198122624549 is a prime.

It is a super-3 number, since 3×198122886693³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198122886693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198122886623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11006827030 + ... + 11006827047.

Almost surely, 2^198122886693 is an apocalyptic number.

It is an amenable number.

198122886693 is a deficient number, since it is larger than the sum of its proper divisors (88054616321).

198122886693 is a wasteful number, since it uses less digits than its factorization.

198122886693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22013654083 (or 22013654080 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The spelling of 198122886693 in words is "one hundred ninety-eight billion, one hundred twenty-two million, eight hundred eighty-six thousand, six hundred ninety-three".