9443612813 has 2 divisors, whose sum is σ = 9443612814. Its totient is φ = 9443612812.

The previous prime is 9443612797. The next prime is 9443612819. The reversal of 9443612813 is 3182163449.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8445242404 + 998370409 = 91898^2 + 31597^2 .

It is a cyclic number.

It is not a de Polignac number, because 9443612813 - 2⁴ = 9443612797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9443612819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4721806406 + 4721806407.

It is an arithmetic number, because the mean of its divisors is an integer number (4721806407).

Almost surely, 2^9443612813 is an apocalyptic number.

It is an amenable number.

9443612813 is a deficient number, since it is larger than the sum of its proper divisors (1).

9443612813 is an equidigital number, since it uses as much as digits as its factorization.

9443612813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 9443612813 is about 97178.2527780779. The cubic root of 9443612813 is about 2113.7131904148.

The spelling of 9443612813 in words is "nine billion, four hundred forty-three million, six hundred twelve thousand, eight hundred thirteen".