9145843813 has 2 divisors, whose sum is σ = 9145843814. Its totient is φ = 9145843812.

The previous prime is 9145843769. The next prime is 9145843867. The reversal of 9145843813 is 3183485419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8571426724 + 574417089 = 92582^2 + 23967^2 .

It is a cyclic number.

It is not a de Polignac number, because 9145843813 - 2²⁹ = 8608972901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9145843313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4572921906 + 4572921907.

It is an arithmetic number, because the mean of its divisors is an integer number (4572921907).

Almost surely, 2^9145843813 is an apocalyptic number.

It is an amenable number.

9145843813 is a deficient number, since it is larger than the sum of its proper divisors (1).

9145843813 is an equidigital number, since it uses as much as digits as its factorization.

9145843813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 9145843813 is about 95633.9051435211. The cubic root of 9145843813 is about 2091.2594999084.

The spelling of 9145843813 in words is "nine billion, one hundred forty-five million, eight hundred forty-three thousand, eight hundred thirteen".