19097316523 has 2 divisors, whose sum is σ = 19097316524. Its totient is φ = 19097316522.

The previous prime is 19097316479. The next prime is 19097316541. The reversal of 19097316523 is 32561379091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19097316523 - 2²¹ = 19095219371 is a prime.

It is not a weakly prime, because it can be changed into another prime (19097376523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9548658261 + 9548658262.

It is an arithmetic number, because the mean of its divisors is an integer number (9548658262).

Almost surely, 2^19097316523 is an apocalyptic number.

19097316523 is a deficient number, since it is larger than the sum of its proper divisors (1).

19097316523 is an equidigital number, since it uses as much as digits as its factorization.

19097316523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 306180, while the sum is 46.

The spelling of 19097316523 in words is "nineteen billion, ninety-seven million, three hundred sixteen thousand, five hundred twenty-three".