198968793 has 4 divisors (see below), whose sum is σ = 265291728. Its totient is φ = 132645860.

The previous prime is 198968773. The next prime is 198968801. The reversal of 198968793 is 397869891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 198968793 - 2⁶ = 198968729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198968723) 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, 33161463 + ... + 33161468.

It is an arithmetic number, because the mean of its divisors is an integer number (66322932).

Almost surely, 2^198968793 is an apocalyptic number.

It is an amenable number.

198968793 is a deficient number, since it is larger than the sum of its proper divisors (66322935).

198968793 is an equidigital number, since it uses as much as digits as its factorization.

198968793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66322934.

The product of its digits is 5878656, while the sum is 60.

The square root of 198968793 is about 14105.6298335097. The cubic root of 198968793 is about 583.7967260658.

The spelling of 198968793 in words is "one hundred ninety-eight million, nine hundred sixty-eight thousand, seven hundred ninety-three".