198994343 has 2 divisors, whose sum is σ = 198994344. Its totient is φ = 198994342.

The previous prime is 198994319. The next prime is 198994357. The reversal of 198994343 is 343499891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198994343 - 2¹⁸ = 198732199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198994291 and 198994300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198994303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99497171 + 99497172.

It is an arithmetic number, because the mean of its divisors is an integer number (99497172).

Almost surely, 2^198994343 is an apocalyptic number.

198994343 is a deficient number, since it is larger than the sum of its proper divisors (1).

198994343 is an equidigital number, since it uses as much as digits as its factorization.

198994343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 198994343 is about 14106.5354711921. The cubic root of 198994343 is about 583.8217138502.

It can be divided in two parts, 19899 and 4343, that added together give a palindrome (24242).

The spelling of 198994343 in words is "one hundred ninety-eight million, nine hundred ninety-four thousand, three hundred forty-three".