19349544073 has 2 divisors, whose sum is σ = 19349544074. Its totient is φ = 19349544072.

The previous prime is 19349544037. The next prime is 19349544079. The reversal of 19349544073 is 37044594391.

Together with previous prime (19349544037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15963817104 + 3385726969 = 126348^2 + 58187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19349544073 is a prime.

It is not a weakly prime, because it can be changed into another prime (19349544079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9674772036 + 9674772037.

It is an arithmetic number, because the mean of its divisors is an integer number (9674772037).

Almost surely, 2^19349544073 is an apocalyptic number.

It is an amenable number.

19349544073 is a deficient number, since it is larger than the sum of its proper divisors (1).

19349544073 is an equidigital number, since it uses as much as digits as its factorization.

19349544073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 19349544073 in words is "nineteen billion, three hundred forty-nine million, five hundred forty-four thousand, seventy-three".