19244086247 has 2 divisors, whose sum is σ = 19244086248. Its totient is φ = 19244086246.

The previous prime is 19244086229. The next prime is 19244086297. The reversal of 19244086247 is 74268044291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19244086247 - 2³⁴ = 2064217063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19244086297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9622043123 + 9622043124.

It is an arithmetic number, because the mean of its divisors is an integer number (9622043124).

Almost surely, 2^19244086247 is an apocalyptic number.

19244086247 is a deficient number, since it is larger than the sum of its proper divisors (1).

19244086247 is an equidigital number, since it uses as much as digits as its factorization.

19244086247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 19244086247 in words is "nineteen billion, two hundred forty-four million, eighty-six thousand, two hundred forty-seven".