19467794491 has 2 divisors, whose sum is σ = 19467794492. Its totient is φ = 19467794490.

The previous prime is 19467794413. The next prime is 19467794513. The reversal of 19467794491 is 19449776491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19467794491 - 2⁷ = 19467794363 is a prime.

It is not a weakly prime, because it can be changed into another prime (19467894491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9733897245 + 9733897246.

It is an arithmetic number, because the mean of its divisors is an integer number (9733897246).

Almost surely, 2^19467794491 is an apocalyptic number.

19467794491 is a deficient number, since it is larger than the sum of its proper divisors (1).

19467794491 is an equidigital number, since it uses as much as digits as its factorization.

19467794491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 61.

The spelling of 19467794491 in words is "nineteen billion, four hundred sixty-seven million, seven hundred ninety-four thousand, four hundred ninety-one".