8194533773 has 2 divisors, whose sum is σ = 8194533774. Its totient is φ = 8194533772.

The previous prime is 8194533703. The next prime is 8194533793. The reversal of 8194533773 is 3773354918.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8103960484 + 90573289 = 90022^2 + 9517^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8194533773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8194533703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4097266886 + 4097266887.

It is an arithmetic number, because the mean of its divisors is an integer number (4097266887).

Almost surely, 2^8194533773 is an apocalyptic number.

It is an amenable number.

8194533773 is a deficient number, since it is larger than the sum of its proper divisors (1).

8194533773 is an equidigital number, since it uses as much as digits as its factorization.

8194533773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 50.

The square root of 8194533773 is about 90523.6641602625. The cubic root of 8194533773 is about 2016.0814939506.

The spelling of 8194533773 in words is "eight billion, one hundred ninety-four million, five hundred thirty-three thousand, seven hundred seventy-three".