19371047099 has 2 divisors, whose sum is σ = 19371047100. Its totient is φ = 19371047098.

The previous prime is 19371047093. The next prime is 19371047123. The reversal of 19371047099 is 99074017391.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19371047099 - 2²⁸ = 19102611643 is a prime.

It is not a weakly prime, because it can be changed into another prime (19371047093) 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 as a sum of consecutive naturals, namely, 9685523549 + 9685523550.

It is an arithmetic number, because the mean of its divisors is an integer number (9685523550).

Almost surely, 2^19371047099 is an apocalyptic number.

19371047099 is a deficient number, since it is larger than the sum of its proper divisors (1).

19371047099 is an equidigital number, since it uses as much as digits as its factorization.

19371047099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 428652, while the sum is 50.

The spelling of 19371047099 in words is "nineteen billion, three hundred seventy-one million, forty-seven thousand, ninety-nine".