8500748129 has 2 divisors, whose sum is σ = 8500748130. Its totient is φ = 8500748128.

The previous prime is 8500748099. The next prime is 8500748141. The reversal of 8500748129 is 9218470058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8172160000 + 328588129 = 90400^2 + 18127^2 .

It is a cyclic number.

It is not a de Polignac number, because 8500748129 - 2²⁰ = 8499699553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8500748129.

It is not a weakly prime, because it can be changed into another prime (8500748189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4250374064 + 4250374065.

It is an arithmetic number, because the mean of its divisors is an integer number (4250374065).

Almost surely, 2^8500748129 is an apocalyptic number.

It is an amenable number.

8500748129 is a deficient number, since it is larger than the sum of its proper divisors (1).

8500748129 is an equidigital number, since it uses as much as digits as its factorization.

8500748129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 8500748129 is about 92199.5017828188. The cubic root of 8500748129 is about 2040.8874238012.

The spelling of 8500748129 in words is "eight billion, five hundred million, seven hundred forty-eight thousand, one hundred twenty-nine".