19097316479 has 2 divisors, whose sum is σ = 19097316480. Its totient is φ = 19097316478.

The previous prime is 19097316473. The next prime is 19097316523. The reversal of 19097316479 is 97461379091.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19097316479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19097316473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9548658239 + 9548658240.

It is an arithmetic number, because the mean of its divisors is an integer number (9548658240).

Almost surely, 2^19097316479 is an apocalyptic number.

19097316479 is a deficient number, since it is larger than the sum of its proper divisors (1).

19097316479 is an equidigital number, since it uses as much as digits as its factorization.

19097316479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2571912, while the sum is 56.

The spelling of 19097316479 in words is "nineteen billion, ninety-seven million, three hundred sixteen thousand, four hundred seventy-nine".