998188000819 has 2 divisors, whose sum is σ = 998188000820. Its totient is φ = 998188000818.

The previous prime is 998188000753. The next prime is 998188000921. The reversal of 998188000819 is 918000881899.

It is a weak prime.

It is an emirp because it is prime and its reverse (918000881899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998188000819 - 2⁹ = 998188000307 is a prime.

It is a super-2 number, since 2×998188000819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (998188000219) 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, 499094000409 + 499094000410.

It is an arithmetic number, because the mean of its divisors is an integer number (499094000410).

Almost surely, 2^998188000819 is an apocalyptic number.

998188000819 is a deficient number, since it is larger than the sum of its proper divisors (1).

998188000819 is an equidigital number, since it uses as much as digits as its factorization.

998188000819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2985984, while the sum is 61.

The spelling of 998188000819 in words is "nine hundred ninety-eight billion, one hundred eighty-eight million, eight hundred nineteen", and thus it is an aban number.