19192012190947 has 2 divisors, whose sum is σ = 19192012190948. Its totient is φ = 19192012190946.

The previous prime is 19192012190873. The next prime is 19192012190959. The reversal of 19192012190947 is 74909121029191.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19192012190947 is a prime.

It is not a weakly prime, because it can be changed into another prime (19192012190977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9596006095473 + 9596006095474.

It is an arithmetic number, because the mean of its divisors is an integer number (9596006095474).

Almost surely, 2^{19192012190947} is an apocalyptic number.

19192012190947 is a deficient number, since it is larger than the sum of its proper divisors (1).

19192012190947 is an equidigital number, since it uses as much as digits as its factorization.

19192012190947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 55.

The spelling of 19192012190947 in words is "nineteen trillion, one hundred ninety-two billion, twelve million, one hundred ninety thousand, nine hundred forty-seven".