9072197807 has 2 divisors, whose sum is σ = 9072197808. Its totient is φ = 9072197806.

The previous prime is 9072197801. The next prime is 9072197819. The reversal of 9072197807 is 7087912709.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9072197807 - 2²⁰ = 9071149231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9072197801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4536098903 + 4536098904.

It is an arithmetic number, because the mean of its divisors is an integer number (4536098904).

Almost surely, 2^9072197807 is an apocalyptic number.

9072197807 is a deficient number, since it is larger than the sum of its proper divisors (1).

9072197807 is an equidigital number, since it uses as much as digits as its factorization.

9072197807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 50.

The square root of 9072197807 is about 95248.0855818110. The cubic root of 9072197807 is about 2085.6311451639.

The spelling of 9072197807 in words is "nine billion, seventy-two million, one hundred ninety-seven thousand, eight hundred seven".