19419596897 has 2 divisors, whose sum is σ = 19419596898. Its totient is φ = 19419596896.

The previous prime is 19419596881. The next prime is 19419596899. The reversal of 19419596897 is 79869591491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19392233536 + 27363361 = 139256^2 + 5231^2 .

It is an emirp because it is prime and its reverse (79869591491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19419596897 - 2⁴ = 19419596881 is a prime.

Together with 19419596899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19419596899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9709798448 + 9709798449.

It is an arithmetic number, because the mean of its divisors is an integer number (9709798449).

Almost surely, 2^19419596897 is an apocalyptic number.

It is an amenable number.

19419596897 is a deficient number, since it is larger than the sum of its proper divisors (1).

19419596897 is an equidigital number, since it uses as much as digits as its factorization.

19419596897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44089920, while the sum is 68.

The spelling of 19419596897 in words is "nineteen billion, four hundred nineteen million, five hundred ninety-six thousand, eight hundred ninety-seven".