19047447359 has 2 divisors, whose sum is σ = 19047447360. Its totient is φ = 19047447358.

The previous prime is 19047447329. The next prime is 19047447371. The reversal of 19047447359 is 95374474091.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19047447359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19047447359.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19047447329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9523723679 + 9523723680.

It is an arithmetic number, because the mean of its divisors is an integer number (9523723680).

Almost surely, 2^19047447359 is an apocalyptic number.

19047447359 is a deficient number, since it is larger than the sum of its proper divisors (1).

19047447359 is an equidigital number, since it uses as much as digits as its factorization.

19047447359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 19047447359 in words is "nineteen billion, forty-seven million, four hundred forty-seven thousand, three hundred fifty-nine".