8500388537 has 2 divisors, whose sum is σ = 8500388538. Its totient is φ = 8500388536.

The previous prime is 8500388497. The next prime is 8500388551. The reversal of 8500388537 is 7358830058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6896305936 + 1604082601 = 83044^2 + 40051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8500388537 is a prime.

It is a super-2 number, since 2×8500388537² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8500388491 and 8500388500.

It is not a weakly prime, because it can be changed into another prime (8500382537) 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 as a sum of consecutive naturals, namely, 4250194268 + 4250194269.

It is an arithmetic number, because the mean of its divisors is an integer number (4250194269).

Almost surely, 2^8500388537 is an apocalyptic number.

It is an amenable number.

8500388537 is a deficient number, since it is larger than the sum of its proper divisors (1).

8500388537 is an equidigital number, since it uses as much as digits as its factorization.

8500388537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 806400, while the sum is 47.

The square root of 8500388537 is about 92197.5516865822. The cubic root of 8500388537 is about 2040.8586460541.

The spelling of 8500388537 in words is "eight billion, five hundred million, three hundred eighty-eight thousand, five hundred thirty-seven".