19470066947 has 2 divisors, whose sum is σ = 19470066948. Its totient is φ = 19470066946.

The previous prime is 19470066929. The next prime is 19470066953. The reversal of 19470066947 is 74966007491.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (74966007491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19470066947 - 2⁸ = 19470066691 is a prime.

It is not a weakly prime, because it can be changed into another prime (19470066977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9735033473 + 9735033474.

It is an arithmetic number, because the mean of its divisors is an integer number (9735033474).

Almost surely, 2^19470066947 is an apocalyptic number.

19470066947 is a deficient number, since it is larger than the sum of its proper divisors (1).

19470066947 is an equidigital number, since it uses as much as digits as its factorization.

19470066947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 19470066947 in words is "nineteen billion, four hundred seventy million, sixty-six thousand, nine hundred forty-seven".