8158254891 has 4 divisors (see below), whose sum is σ = 10877673192. Its totient is φ = 5438836592.

The previous prime is 8158254883. The next prime is 8158254893. The reversal of 8158254891 is 1984528518.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8158254891 - 2³ = 8158254883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8158254893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1359709146 + ... + 1359709151.

It is an arithmetic number, because the mean of its divisors is an integer number (2719418298).

Almost surely, 2^8158254891 is an apocalyptic number.

8158254891 is a deficient number, since it is larger than the sum of its proper divisors (2719418301).

8158254891 is a wasteful number, since it uses less digits than its factorization.

8158254891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719418300.

The product of its digits is 921600, while the sum is 51.

The square root of 8158254891 is about 90323.0584679239. The cubic root of 8158254891 is about 2013.1018903953.

The spelling of 8158254891 in words is "eight billion, one hundred fifty-eight million, two hundred fifty-four thousand, eight hundred ninety-one".