7873647473 has 2 divisors, whose sum is σ = 7873647474. Its totient is φ = 7873647472.

The previous prime is 7873647469. The next prime is 7873647487. The reversal of 7873647473 is 3747463787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6903449569 + 970197904 = 83087^2 + 31148^2 .

It is a cyclic number.

It is not a de Polignac number, because 7873647473 - 2² = 7873647469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7873647433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3936823736 + 3936823737.

It is an arithmetic number, because the mean of its divisors is an integer number (3936823737).

Almost surely, 2^7873647473 is an apocalyptic number.

It is an amenable number.

7873647473 is a deficient number, since it is larger than the sum of its proper divisors (1).

7873647473 is an equidigital number, since it uses as much as digits as its factorization.

7873647473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16595712, while the sum is 56.

The square root of 7873647473 is about 88733.5757929320. The cubic root of 7873647473 is about 1989.4146972721.

The spelling of 7873647473 in words is "seven billion, eight hundred seventy-three million, six hundred forty-seven thousand, four hundred seventy-three".