8157127913 has 16 divisors (see below), whose sum is σ = 8982005760. Its totient is φ = 7346451600.

The previous prime is 8157127903. The next prime is 8157127931. The reversal of 8157127913 is 3197217518.

It is a cyclic number.

It is not a de Polignac number, because 8157127913 - 2⁴ = 8157127897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8157127903) 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 15 ways as a sum of consecutive naturals, for example, 525956 + ... + 541242.

It is an arithmetic number, because the mean of its divisors is an integer number (561375360).

Almost surely, 2^8157127913 is an apocalyptic number.

It is an amenable number.

8157127913 is a deficient number, since it is larger than the sum of its proper divisors (824877847).

8157127913 is a wasteful number, since it uses less digits than its factorization.

8157127913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15748.

The product of its digits is 105840, while the sum is 44.

The square root of 8157127913 is about 90316.8196572488. The cubic root of 8157127913 is about 2013.0091897689.

The spelling of 8157127913 in words is "eight billion, one hundred fifty-seven million, one hundred twenty-seven thousand, nine hundred thirteen".