198119743 has 2 divisors, whose sum is σ = 198119744. Its totient is φ = 198119742.

The previous prime is 198119689. The next prime is 198119807. The reversal of 198119743 is 347911891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198119743 - 2²⁵ = 164565311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198119743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198119443) 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, 99059871 + 99059872.

It is an arithmetic number, because the mean of its divisors is an integer number (99059872).

Almost surely, 2^198119743 is an apocalyptic number.

198119743 is a deficient number, since it is larger than the sum of its proper divisors (1).

198119743 is an equidigital number, since it uses as much as digits as its factorization.

198119743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 43.

The square root of 198119743 is about 14075.5015185961. The cubic root of 198119743 is about 582.9651394765.

The spelling of 198119743 in words is "one hundred ninety-eight million, one hundred nineteen thousand, seven hundred forty-three".