3686851913 has 2 divisors, whose sum is σ = 3686851914. Its totient is φ = 3686851912.

The previous prime is 3686851901. The next prime is 3686851919. The reversal of 3686851913 is 3191586863.

It is a happy number.

3686851913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2617038649 + 1069813264 = 51157^2 + 32708^2 .

It is an emirp because it is prime and its reverse (3191586863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3686851913 - 2¹⁰ = 3686850889 is a prime.

It is not a weakly prime, because it can be changed into another prime (3686851919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1843425956 + 1843425957.

It is an arithmetic number, because the mean of its divisors is an integer number (1843425957).

Almost surely, 2^3686851913 is an apocalyptic number.

It is an amenable number.

3686851913 is a deficient number, since it is larger than the sum of its proper divisors (1).

3686851913 is an equidigital number, since it uses as much as digits as its factorization.

3686851913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 50.

The square root of 3686851913 is about 60719.4525090601. The cubic root of 3686851913 is about 1544.8461373852.

The spelling of 3686851913 in words is "three billion, six hundred eighty-six million, eight hundred fifty-one thousand, nine hundred thirteen".