3686123269 has 4 divisors (see below), whose sum is σ = 3694119660. Its totient is φ = 3678126880.

The previous prime is 3686123263. The next prime is 3686123279. The reversal of 3686123269 is 9623216863.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1931602500 + 1754520769 = 43950^2 + 41887^2 .

It is a cyclic number.

It is not a de Polignac number, because 3686123269 - 2⁵ = 3686123237 is a prime.

It is a super-2 number, since 2×3686123269² = 27175009508526492722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686123263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3997504 + ... + 3998425.

It is an arithmetic number, because the mean of its divisors is an integer number (923529915).

Almost surely, 2^3686123269 is an apocalyptic number.

It is an amenable number.

3686123269 is a deficient number, since it is larger than the sum of its proper divisors (7996391).

3686123269 is an equidigital number, since it uses as much as digits as its factorization.

3686123269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7996390.

The product of its digits is 559872, while the sum is 46.

The square root of 3686123269 is about 60713.4521255380. The cubic root of 3686123269 is about 1544.7443597659.

The spelling of 3686123269 in words is "three billion, six hundred eighty-six million, one hundred twenty-three thousand, two hundred sixty-nine".