19080749647 has 2 divisors, whose sum is σ = 19080749648. Its totient is φ = 19080749646.

The previous prime is 19080749603. The next prime is 19080749657. The reversal of 19080749647 is 74694708091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19080749647 - 2¹¹ = 19080747599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19080749657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9540374823 + 9540374824.

It is an arithmetic number, because the mean of its divisors is an integer number (9540374824).

Almost surely, 2^19080749647 is an apocalyptic number.

19080749647 is a deficient number, since it is larger than the sum of its proper divisors (1).

19080749647 is an equidigital number, since it uses as much as digits as its factorization.

19080749647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 19080749647 in words is "nineteen billion, eighty million, seven hundred forty-nine thousand, six hundred forty-seven".