19044262439 has 2 divisors, whose sum is σ = 19044262440. Its totient is φ = 19044262438.

The previous prime is 19044262429. The next prime is 19044262459. The reversal of 19044262439 is 93426244091.

It is a weak prime.

It is an emirp because it is prime and its reverse (93426244091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19044262439 - 2²⁴ = 19027485223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19044262439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19044262429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9522131219 + 9522131220.

It is an arithmetic number, because the mean of its divisors is an integer number (9522131220).

Almost surely, 2^19044262439 is an apocalyptic number.

19044262439 is a deficient number, since it is larger than the sum of its proper divisors (1).

19044262439 is an equidigital number, since it uses as much as digits as its factorization.

19044262439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 19044262439 in words is "nineteen billion, forty-four million, two hundred sixty-two thousand, four hundred thirty-nine".