198963783959 has 2 divisors, whose sum is σ = 198963783960. Its totient is φ = 198963783958.

The previous prime is 198963783937. The next prime is 198963783961. The reversal of 198963783959 is 959387369891.

198963783959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198963783959 - 2²⁴ = 198947006743 is a prime.

Together with 198963783961, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198963783959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198963783989) 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, 99481891979 + 99481891980.

It is an arithmetic number, because the mean of its divisors is an integer number (99481891980).

Almost surely, 2^198963783959 is an apocalyptic number.

198963783959 is a deficient number, since it is larger than the sum of its proper divisors (1).

198963783959 is an equidigital number, since it uses as much as digits as its factorization.

198963783959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793618560, while the sum is 77.

The spelling of 198963783959 in words is "one hundred ninety-eight billion, nine hundred sixty-three million, seven hundred eighty-three thousand, nine hundred fifty-nine".