19098099000091 has 2 divisors, whose sum is σ = 19098099000092. Its totient is φ = 19098099000090.

The previous prime is 19098099000041. The next prime is 19098099000109. The reversal of 19098099000091 is 19000099089091.

Together with next prime (19098099000109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (19000099089091) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 16000066086061 and 16068066000061.

It is a cyclic number.

It is not a de Polignac number, because 19098099000091 - 2⁷ = 19098098999963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19098098999996 and 19098099000041.

It is not a weakly prime, because it can be changed into another prime (19098099000031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9549049500045 + 9549049500046.

It is an arithmetic number, because the mean of its divisors is an integer number (9549049500046).

Almost surely, 2^{19098099000091} is an apocalyptic number.

19098099000091 is a deficient number, since it is larger than the sum of its proper divisors (1).

19098099000091 is an equidigital number, since it uses as much as digits as its factorization.

19098099000091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 55.

The spelling of 19098099000091 in words is "nineteen trillion, ninety-eight billion, ninety-nine million, ninety-one", and thus it is an aban number and an uban number.