19062491849 has 2 divisors, whose sum is σ = 19062491850. Its totient is φ = 19062491848.

The previous prime is 19062491827. The next prime is 19062491873. The reversal of 19062491849 is 94819426091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10716390400 + 8346101449 = 103520^2 + 91357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19062491849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19062491849.

It is not a weakly prime, because it can be changed into another prime (19062491879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9531245924 + 9531245925.

It is an arithmetic number, because the mean of its divisors is an integer number (9531245925).

Almost surely, 2^19062491849 is an apocalyptic number.

It is an amenable number.

19062491849 is a deficient number, since it is larger than the sum of its proper divisors (1).

19062491849 is an equidigital number, since it uses as much as digits as its factorization.

19062491849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The spelling of 19062491849 in words is "nineteen billion, sixty-two million, four hundred ninety-one thousand, eight hundred forty-nine".