3686265857 has 2 divisors, whose sum is σ = 3686265858. Its totient is φ = 3686265856.

The previous prime is 3686265853. The next prime is 3686265937. The reversal of 3686265857 is 7585626863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2368866241 + 1317399616 = 48671^2 + 36296^2 .

It is a cyclic number.

It is not a de Polignac number, because 3686265857 - 2² = 3686265853 is a prime.

It is a super-3 number, since 3×3686265857³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (3686265853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1843132928 + 1843132929.

It is an arithmetic number, because the mean of its divisors is an integer number (1843132929).

Almost surely, 2^3686265857 is an apocalyptic number.

It is an amenable number.

3686265857 is a deficient number, since it is larger than the sum of its proper divisors (1).

3686265857 is an equidigital number, since it uses as much as digits as its factorization.

3686265857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14515200, while the sum is 56.

The square root of 3686265857 is about 60714.6263844224. The cubic root of 3686265857 is about 1544.7642776356.

The spelling of 3686265857 in words is "three billion, six hundred eighty-six million, two hundred sixty-five thousand, eight hundred fifty-seven".