8159758157 has 4 divisors (see below), whose sum is σ = 8271535740. Its totient is φ = 8047980576.

The previous prime is 8159758133. The next prime is 8159758163. The reversal of 8159758157 is 7518579518.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7518579518 = 2 ⋅3759289759.

It can be written as a sum of positive squares in 2 ways, for example, as 3632352361 + 4527405796 = 60269^2 + 67286^2 .

It is a cyclic number.

It is not a de Polignac number, because 8159758157 - 2⁸ = 8159757901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8159758127) 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, 55888682 + ... + 55888827.

It is an arithmetic number, because the mean of its divisors is an integer number (2067883935).

Almost surely, 2^8159758157 is an apocalyptic number.

It is an amenable number.

8159758157 is a deficient number, since it is larger than the sum of its proper divisors (111777583).

8159758157 is a wasteful number, since it uses less digits than its factorization.

8159758157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111777582.

The product of its digits is 3528000, while the sum is 56.

The square root of 8159758157 is about 90331.3796916664. The cubic root of 8159758157 is about 2013.2255296545.

The spelling of 8159758157 in words is "eight billion, one hundred fifty-nine million, seven hundred fifty-eight thousand, one hundred fifty-seven".