9213823841 has 2 divisors, whose sum is σ = 9213823842. Its totient is φ = 9213823840.

The previous prime is 9213823819. The next prime is 9213823847. The reversal of 9213823841 is 1483283129.

9213823841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5817265441 + 3396558400 = 76271^2 + 58280^2 .

It is an emirp because it is prime and its reverse (1483283129) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9213823841 is a prime.

It is not a weakly prime, because it can be changed into another prime (9213823847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4606911920 + 4606911921.

It is an arithmetic number, because the mean of its divisors is an integer number (4606911921).

Almost surely, 2^9213823841 is an apocalyptic number.

It is an amenable number.

9213823841 is a deficient number, since it is larger than the sum of its proper divisors (1).

9213823841 is an equidigital number, since it uses as much as digits as its factorization.

9213823841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 41.

The square root of 9213823841 is about 95988.6651693834. The cubic root of 9213823841 is about 2096.4280806761.

The spelling of 9213823841 in words is "nine billion, two hundred thirteen million, eight hundred twenty-three thousand, eight hundred forty-one".