1198803719819 has 2 divisors, whose sum is σ = 1198803719820. Its totient is φ = 1198803719818.

The previous prime is 1198803719809. The next prime is 1198803719843. The reversal of 1198803719819 is 9189173088911.

It is a weak prime.

It is an emirp because it is prime and its reverse (9189173088911) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1198803719819 is a prime.

It is a super-2 number, since 2×1198803719819² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1198803719809) 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, 599401859909 + 599401859910.

It is an arithmetic number, because the mean of its divisors is an integer number (599401859910).

Almost surely, 2^{1198803719819} is an apocalyptic number.

1198803719819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198803719819 is an equidigital number, since it uses as much as digits as its factorization.

1198803719819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 65.

The spelling of 1198803719819 in words is "one trillion, one hundred ninety-eight billion, eight hundred three million, seven hundred nineteen thousand, eight hundred nineteen".