19013437441 has 2 divisors, whose sum is σ = 19013437442. Its totient is φ = 19013437440.

The previous prime is 19013437411. The next prime is 19013437489. The reversal of 19013437441 is 14473431091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11526169600 + 7487267841 = 107360^2 + 86529^2 .

It is a cyclic number.

It is not a de Polignac number, because 19013437441 - 2¹³ = 19013429249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19013437441.

It is not a weakly prime, because it can be changed into another prime (19013437411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9506718720 + 9506718721.

It is an arithmetic number, because the mean of its divisors is an integer number (9506718721).

Almost surely, 2^19013437441 is an apocalyptic number.

It is an amenable number.

19013437441 is a deficient number, since it is larger than the sum of its proper divisors (1).

19013437441 is an equidigital number, since it uses as much as digits as its factorization.

19013437441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 19013437441 in words is "nineteen billion, thirteen million, four hundred thirty-seven thousand, four hundred forty-one".