8309918093 has 2 divisors, whose sum is σ = 8309918094. Its totient is φ = 8309918092.

The previous prime is 8309918083. The next prime is 8309918153. The reversal of 8309918093 is 3908199038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5673403684 + 2636514409 = 75322^2 + 51347^2 .

It is a cyclic number.

It is not a de Polignac number, because 8309918093 - 2⁴ = 8309918077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8309918083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4154959046 + 4154959047.

It is an arithmetic number, because the mean of its divisors is an integer number (4154959047).

Almost surely, 2^8309918093 is an apocalyptic number.

It is an amenable number.

8309918093 is a deficient number, since it is larger than the sum of its proper divisors (1).

8309918093 is an equidigital number, since it uses as much as digits as its factorization.

8309918093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 8309918093 is about 91158.7521470100. The cubic root of 8309918093 is about 2025.5000009445.

The spelling of 8309918093 in words is "eight billion, three hundred nine million, nine hundred eighteen thousand, ninety-three".