198582540439 has 2 divisors, whose sum is σ = 198582540440. Its totient is φ = 198582540438.

The previous prime is 198582540413. The next prime is 198582540509. The reversal of 198582540439 is 934045285891.

It is a happy number.

198582540439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (934045285891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198582540439 - 2⁹ = 198582539927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198582540139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99291270219 + 99291270220.

It is an arithmetic number, because the mean of its divisors is an integer number (99291270220).

Almost surely, 2^198582540439 is an apocalyptic number.

198582540439 is a deficient number, since it is larger than the sum of its proper divisors (1).

198582540439 is an equidigital number, since it uses as much as digits as its factorization.

198582540439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 198582540439 in words is "one hundred ninety-eight billion, five hundred eighty-two million, five hundred forty thousand, four hundred thirty-nine".