9257864081 has 2 divisors, whose sum is σ = 9257864082. Its totient is φ = 9257864080.

The previous prime is 9257864041. The next prime is 9257864141. The reversal of 9257864081 is 1804687529.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9179364481 + 78499600 = 95809^2 + 8860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9257864081 is a prime.

It is a super-2 number, since 2×9257864081² (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 (9257864041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4628932040 + 4628932041.

It is an arithmetic number, because the mean of its divisors is an integer number (4628932041).

Almost surely, 2^9257864081 is an apocalyptic number.

It is an amenable number.

9257864081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9257864081 is an equidigital number, since it uses as much as digits as its factorization.

9257864081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 9257864081 is about 96217.7950329356. The cubic root of 9257864081 is about 2099.7629423263.

The spelling of 9257864081 in words is "nine billion, two hundred fifty-seven million, eight hundred sixty-four thousand, eighty-one".