19481263783 has 2 divisors, whose sum is σ = 19481263784. Its totient is φ = 19481263782.

The previous prime is 19481263751. The next prime is 19481263799. The reversal of 19481263783 is 38736218491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19481263783 - 2⁵ = 19481263751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19481263783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19481264783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9740631891 + 9740631892.

It is an arithmetic number, because the mean of its divisors is an integer number (9740631892).

Almost surely, 2^19481263783 is an apocalyptic number.

19481263783 is a deficient number, since it is larger than the sum of its proper divisors (1).

19481263783 is an equidigital number, since it uses as much as digits as its factorization.

19481263783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 52.

The spelling of 19481263783 in words is "nineteen billion, four hundred eighty-one million, two hundred sixty-three thousand, seven hundred eighty-three".