3686940109 has 2 divisors, whose sum is σ = 3686940110. Its totient is φ = 3686940108.

The previous prime is 3686940091. The next prime is 3686940137. The reversal of 3686940109 is 9010496863.

Together with previous prime (3686940091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3652389225 + 34550884 = 60435^2 + 5878^2 .

It is a cyclic number.

It is not a de Polignac number, because 3686940109 - 2¹³ = 3686931917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3686940199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1843470054 + 1843470055.

It is an arithmetic number, because the mean of its divisors is an integer number (1843470055).

Almost surely, 2^3686940109 is an apocalyptic number.

It is an amenable number.

3686940109 is a deficient number, since it is larger than the sum of its proper divisors (1).

3686940109 is an equidigital number, since it uses as much as digits as its factorization.

3686940109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 3686940109 is about 60720.1787629121. The cubic root of 3686940109 is about 1544.8584557684.

The spelling of 3686940109 in words is "three billion, six hundred eighty-six million, nine hundred forty thousand, one hundred nine".