8385083813 has 4 divisors (see below), whose sum is σ = 8395199340. Its totient is φ = 8374968288.

The previous prime is 8385083801. The next prime is 8385083821. The reversal of 8385083813 is 3183805838.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3183805838 = 2 ⋅1591902919.

It can be written as a sum of positive squares in 2 ways, for example, as 5049097249 + 3335986564 = 71057^2 + 57758^2 .

It is a cyclic number.

It is not a de Polignac number, because 8385083813 - 2⁴ = 8385083797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8385086813) 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 in 3 ways as a sum of consecutive naturals, for example, 5056520 + ... + 5058177.

It is an arithmetic number, because the mean of its divisors is an integer number (2098799835).

Almost surely, 2^8385083813 is an apocalyptic number.

It is an amenable number.

8385083813 is a deficient number, since it is larger than the sum of its proper divisors (10115527).

8385083813 is a wasteful number, since it uses less digits than its factorization.

8385083813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10115526.

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 8385083813 is about 91570.1032706636. The cubic root of 8385083813 is about 2031.5887659452.

The spelling of 8385083813 in words is "eight billion, three hundred eighty-five million, eighty-three thousand, eight hundred thirteen".