8357082509 has 2 divisors, whose sum is σ = 8357082510. Its totient is φ = 8357082508.

The previous prime is 8357082497. The next prime is 8357082563. The reversal of 8357082509 is 9052807538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6914754025 + 1442328484 = 83155^2 + 37978^2 .

It is a cyclic number.

It is not a de Polignac number, because 8357082509 - 2¹⁶ = 8357016973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8357082709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4178541254 + 4178541255.

It is an arithmetic number, because the mean of its divisors is an integer number (4178541255).

Almost surely, 2^8357082509 is an apocalyptic number.

It is an amenable number.

8357082509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8357082509 is an equidigital number, since it uses as much as digits as its factorization.

8357082509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 8357082509 is about 91417.0799632104. The cubic root of 8357082509 is about 2029.3248022621.

The spelling of 8357082509 in words is "eight billion, three hundred fifty-seven million, eighty-two thousand, five hundred nine".