19091109109883 has 2 divisors, whose sum is σ = 19091109109884. Its totient is φ = 19091109109882.

The previous prime is 19091109109879. The next prime is 19091109109889. The reversal of 19091109109883 is 38890190119091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19091109109883 - 2² = 19091109109879 is a prime.

It is not a weakly prime, because it can be changed into another prime (19091109109889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9545554554941 + 9545554554942.

It is an arithmetic number, because the mean of its divisors is an integer number (9545554554942).

Almost surely, 2^{19091109109883} is an apocalyptic number.

19091109109883 is a deficient number, since it is larger than the sum of its proper divisors (1).

19091109109883 is an equidigital number, since it uses as much as digits as its factorization.

19091109109883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1259712, while the sum is 59.

The spelling of 19091109109883 in words is "nineteen trillion, ninety-one billion, one hundred nine million, one hundred nine thousand, eight hundred eighty-three".