19692419947 has 2 divisors, whose sum is σ = 19692419948. Its totient is φ = 19692419946.

The previous prime is 19692419909. The next prime is 19692419953. The reversal of 19692419947 is 74991429691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19692419947 - 2¹⁵ = 19692387179 is a prime.

It is not a weakly prime, because it can be changed into another prime (19692429947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9846209973 + 9846209974.

It is an arithmetic number, because the mean of its divisors is an integer number (9846209974).

Almost surely, 2^19692419947 is an apocalyptic number.

19692419947 is a deficient number, since it is larger than the sum of its proper divisors (1).

19692419947 is an equidigital number, since it uses as much as digits as its factorization.

19692419947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 61.

The spelling of 19692419947 in words is "nineteen billion, six hundred ninety-two million, four hundred nineteen thousand, nine hundred forty-seven".