8194334957 has 2 divisors, whose sum is σ = 8194334958. Its totient is φ = 8194334956.

The previous prime is 8194334933. The next prime is 8194334963. The reversal of 8194334957 is 7594334918.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5211973636 + 2982361321 = 72194^2 + 54611^2 .

It is a cyclic number.

It is not a de Polignac number, because 8194334957 - 2⁶ = 8194334893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8194334899 and 8194334908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8194334977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4097167478 + 4097167479.

It is an arithmetic number, because the mean of its divisors is an integer number (4097167479).

Almost surely, 2^8194334957 is an apocalyptic number.

It is an amenable number.

8194334957 is a deficient number, since it is larger than the sum of its proper divisors (1).

8194334957 is an equidigital number, since it uses as much as digits as its factorization.

8194334957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 53.

The square root of 8194334957 is about 90522.5660098077. The cubic root of 8194334957 is about 2016.0651890775.

The spelling of 8194334957 in words is "eight billion, one hundred ninety-four million, three hundred thirty-four thousand, nine hundred fifty-seven".