3686689943 has 2 divisors, whose sum is σ = 3686689944. Its totient is φ = 3686689942.

The previous prime is 3686689927. The next prime is 3686689967. The reversal of 3686689943 is 3499866863.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3686689943 - 2⁴ = 3686689927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3686689913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1843344971 + 1843344972.

It is an arithmetic number, because the mean of its divisors is an integer number (1843344972).

Almost surely, 2^3686689943 is an apocalyptic number.

3686689943 is a deficient number, since it is larger than the sum of its proper divisors (1).

3686689943 is an equidigital number, since it uses as much as digits as its factorization.

3686689943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40310784, while the sum is 62.

The square root of 3686689943 is about 60718.1187373258. The cubic root of 3686689943 is about 1544.8235144358.

The spelling of 3686689943 in words is "three billion, six hundred eighty-six million, six hundred eighty-nine thousand, nine hundred forty-three".