8194512291 has 16 divisors (see below), whose sum is σ = 12493131264. Its totient is φ = 4680232704.

The previous prime is 8194512257. The next prime is 8194512341. The reversal of 8194512291 is 1922154918.

It is not a de Polignac number, because 8194512291 - 2⁹ = 8194511779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8194513291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54375 + ... + 139088.

It is an arithmetic number, because the mean of its divisors is an integer number (780820704).

Almost surely, 2^8194512291 is an apocalyptic number.

8194512291 is a deficient number, since it is larger than the sum of its proper divisors (4298618973).

8194512291 is a wasteful number, since it uses less digits than its factorization.

8194512291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195490.

The product of its digits is 51840, while the sum is 42.

The square root of 8194512291 is about 90523.5455061279. The cubic root of 8194512291 is about 2016.0797322274.

The spelling of 8194512291 in words is "eight billion, one hundred ninety-four million, five hundred twelve thousand, two hundred ninety-one".