9355868681 has 2 divisors, whose sum is σ = 9355868682. Its totient is φ = 9355868680.

The previous prime is 9355868657. The next prime is 9355868701. The reversal of 9355868681 is 1868685539.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6096486400 + 3259382281 = 78080^2 + 57091^2 .

It is a cyclic number.

It is not a de Polignac number, because 9355868681 - 2¹⁸ = 9355606537 is a prime.

It is a super-2 number, since 2×9355868681² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9355868681.

It is not a weakly prime, because it can be changed into another prime (9355868981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4677934340 + 4677934341.

It is an arithmetic number, because the mean of its divisors is an integer number (4677934341).

Almost surely, 2^9355868681 is an apocalyptic number.

It is an amenable number.

9355868681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9355868681 is an equidigital number, since it uses as much as digits as its factorization.

9355868681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12441600, while the sum is 59.

The square root of 9355868681 is about 96725.7394957516. The cubic root of 9355868681 is about 2107.1463772164.

The spelling of 9355868681 in words is "nine billion, three hundred fifty-five million, eight hundred sixty-eight thousand, six hundred eighty-one".