8185990313 has 2 divisors, whose sum is σ = 8185990314. Its totient is φ = 8185990312.

The previous prime is 8185990289. The next prime is 8185990357. The reversal of 8185990313 is 3130995818.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7729398889 + 456591424 = 87917^2 + 21368^2 .

It is a cyclic number.

It is not a de Polignac number, because 8185990313 - 2¹⁰ = 8185989289 is a prime.

It is not a weakly prime, because it can be changed into another prime (8185990213) 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, 4092995156 + 4092995157.

It is an arithmetic number, because the mean of its divisors is an integer number (4092995157).

Almost surely, 2^8185990313 is an apocalyptic number.

It is an amenable number.

8185990313 is a deficient number, since it is larger than the sum of its proper divisors (1).

8185990313 is an equidigital number, since it uses as much as digits as its factorization.

8185990313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 8185990313 is about 90476.4627568961. The cubic root of 8185990313 is about 2015.3806079919.

The spelling of 8185990313 in words is "eight billion, one hundred eighty-five million, nine hundred ninety thousand, three hundred thirteen".