198045443 has 2 divisors, whose sum is σ = 198045444. Its totient is φ = 198045442.

The previous prime is 198045403. The next prime is 198045481. The reversal of 198045443 is 344540891.

It is an a-pointer prime, because the next prime (198045481) can be obtained adding 198045443 to its sum of digits (38).

It is a strong prime.

It is an emirp because it is prime and its reverse (344540891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198045443 - 2²² = 193851139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198045397 and 198045406.

It is not a weakly prime, because it can be changed into another prime (198045403) 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, 99022721 + 99022722.

It is an arithmetic number, because the mean of its divisors is an integer number (99022722).

Almost surely, 2^198045443 is an apocalyptic number.

198045443 is a deficient number, since it is larger than the sum of its proper divisors (1).

198045443 is an equidigital number, since it uses as much as digits as its factorization.

198045443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 198045443 is about 14072.8619335230. The cubic root of 198045443 is about 582.8922547234.

The spelling of 198045443 in words is "one hundred ninety-eight million, forty-five thousand, four hundred forty-three".