9266565881 has 2 divisors, whose sum is σ = 9266565882. Its totient is φ = 9266565880.

The previous prime is 9266565863. The next prime is 9266565929. The reversal of 9266565881 is 1885656629.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6577210000 + 2689355881 = 81100^2 + 51859^2 .

It is a cyclic number.

It is not a de Polignac number, because 9266565881 - 2⁶ = 9266565817 is a prime.

It is a super-2 number, since 2×9266565881² (a number of 21 digits) contains 22 as substring.

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 (9266565821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4633282940 + 4633282941.

It is an arithmetic number, because the mean of its divisors is an integer number (4633282941).

Almost surely, 2^9266565881 is an apocalyptic number.

It is an amenable number.

9266565881 is a deficient number, since it is larger than the sum of its proper divisors (1).

9266565881 is an equidigital number, since it uses as much as digits as its factorization.

9266565881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6220800, while the sum is 56.

The square root of 9266565881 is about 96263.0036982017. The cubic root of 9266565881 is about 2100.4206172590.

The spelling of 9266565881 in words is "nine billion, two hundred sixty-six million, five hundred sixty-five thousand, eight hundred eighty-one".