19085091597 has 96 divisors (see below), whose sum is σ = 32994404352. Its totient is φ = 10478160000.

The previous prime is 19085091589. The next prime is 19085091607. The reversal of 19085091597 is 79519058091.

It is not a de Polignac number, because 19085091597 - 2³ = 19085091589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19085091527) 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 in 95 ways as a sum of consecutive naturals, for example, 30245472 + ... + 30246102.

It is an arithmetic number, because the mean of its divisors is an integer number (343691712).

Almost surely, 2^19085091597 is an apocalyptic number.

It is an amenable number.

19085091597 is a deficient number, since it is larger than the sum of its proper divisors (13909312755).

19085091597 is a wasteful number, since it uses less digits than its factorization.

19085091597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 54.

The spelling of 19085091597 in words is "nineteen billion, eighty-five million, ninety-one thousand, five hundred ninety-seven".