9140868691 has 2 divisors, whose sum is σ = 9140868692. Its totient is φ = 9140868690.

The previous prime is 9140868677. The next prime is 9140868719. The reversal of 9140868691 is 1968680419.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9140868691 - 2¹¹ = 9140866643 is a prime.

It is a super-2 number, since 2×9140868691² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9140868791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4570434345 + 4570434346.

It is an arithmetic number, because the mean of its divisors is an integer number (4570434346).

Almost surely, 2^9140868691 is an apocalyptic number.

9140868691 is a deficient number, since it is larger than the sum of its proper divisors (1).

9140868691 is an equidigital number, since it uses as much as digits as its factorization.

9140868691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 52.

The square root of 9140868691 is about 95607.8903176929. The cubic root of 9140868691 is about 2090.8802326155.

The spelling of 9140868691 in words is "nine billion, one hundred forty million, eight hundred sixty-eight thousand, six hundred ninety-one".