809745950357 has 2 divisors, whose sum is σ = 809745950358. Its totient is φ = 809745950356.

The previous prime is 809745950323. The next prime is 809745950399. The reversal of 809745950357 is 753059547908.

809745950357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 454769501956 + 354976448401 = 674366^2 + 595799^2 .

It is a cyclic number.

It is not a de Polignac number, because 809745950357 - 2¹⁰ = 809745949333 is a prime.

It is a super-3 number, since 3×809745950357³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 809745950357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809745950557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404872975178 + 404872975179.

It is an arithmetic number, because the mean of its divisors is an integer number (404872975179).

Almost surely, 2^809745950357 is an apocalyptic number.

It is an amenable number.

809745950357 is a deficient number, since it is larger than the sum of its proper divisors (1).

809745950357 is an equidigital number, since it uses as much as digits as its factorization.

809745950357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628000, while the sum is 62.

The spelling of 809745950357 in words is "eight hundred nine billion, seven hundred forty-five million, nine hundred fifty thousand, three hundred fifty-seven".