7297073809 has 2 divisors, whose sum is σ = 7297073810. Its totient is φ = 7297073808.

The previous prime is 7297073801. The next prime is 7297073827. The reversal of 7297073809 is 9083707927.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6036823809 + 1260250000 = 77697^2 + 35500^2 .

It is a cyclic number.

It is not a de Polignac number, because 7297073809 - 2³ = 7297073801 is a prime.

It is not a weakly prime, because it can be changed into another prime (7297073801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3648536904 + 3648536905.

It is an arithmetic number, because the mean of its divisors is an integer number (3648536905).

Almost surely, 2^7297073809 is an apocalyptic number.

It is an amenable number.

7297073809 is a deficient number, since it is larger than the sum of its proper divisors (1).

7297073809 is an equidigital number, since it uses as much as digits as its factorization.

7297073809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1333584, while the sum is 52.

The square root of 7297073809 is about 85422.9114991991. The cubic root of 7297073809 is about 1939.6181812257.

The spelling of 7297073809 in words is "seven billion, two hundred ninety-seven million, seventy-three thousand, eight hundred nine".