8107744157 has 2 divisors, whose sum is σ = 8107744158. Its totient is φ = 8107744156.

The previous prime is 8107744153. The next prime is 8107744171. The reversal of 8107744157 is 7514477018.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7298114041 + 809630116 = 85429^2 + 28454^2 .

It is a cyclic number.

It is not a de Polignac number, because 8107744157 - 2² = 8107744153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8107744153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4053872078 + 4053872079.

It is an arithmetic number, because the mean of its divisors is an integer number (4053872079).

Almost surely, 2^8107744157 is an apocalyptic number.

It is an amenable number.

8107744157 is a deficient number, since it is larger than the sum of its proper divisors (1).

8107744157 is an equidigital number, since it uses as much as digits as its factorization.

8107744157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 8107744157 is about 90043.0128160981. The cubic root of 8107744157 is about 2008.9386703199.

The spelling of 8107744157 in words is "eight billion, one hundred seven million, seven hundred forty-four thousand, one hundred fifty-seven".