8194317257 has 8 divisors (see below), whose sum is σ = 9395048832. Its totient is φ = 7001114400.

The previous prime is 8194317199. The next prime is 8194317301. The reversal of 8194317257 is 7527134918.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8194317257 - 2¹² = 8194313161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8194337257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1879844 + ... + 1884197.

It is an arithmetic number, because the mean of its divisors is an integer number (1174381104).

Almost surely, 2^8194317257 is an apocalyptic number.

It is an amenable number.

8194317257 is a deficient number, since it is larger than the sum of its proper divisors (1200731575).

8194317257 is a wasteful number, since it uses less digits than its factorization.

8194317257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3764359.

The product of its digits is 423360, while the sum is 47.

The square root of 8194317257 is about 90522.4682440774. The cubic root of 8194317257 is about 2016.0637374901.

The spelling of 8194317257 in words is "eight billion, one hundred ninety-four million, three hundred seventeen thousand, two hundred fifty-seven".