3688538369 has 2 divisors, whose sum is σ = 3688538370. Its totient is φ = 3688538368.

The previous prime is 3688538353. The next prime is 3688538389. The reversal of 3688538369 is 9638358863.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3669936400 + 18601969 = 60580^2 + 4313^2 .

It is a cyclic number.

It is not a de Polignac number, because 3688538369 - 2⁴ = 3688538353 is a prime.

It is a super-2 number, since 2×3688538369² = 27210630599170360322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3688538389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844269184 + 1844269185.

It is an arithmetic number, because the mean of its divisors is an integer number (1844269185).

Almost surely, 2^3688538369 is an apocalyptic number.

It is an amenable number.

3688538369 is a deficient number, since it is larger than the sum of its proper divisors (1).

3688538369 is an equidigital number, since it uses as much as digits as its factorization.

3688538369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22394880, while the sum is 59.

The square root of 3688538369 is about 60733.3382006950. The cubic root of 3688538369 is about 1545.0816515814.

The spelling of 3688538369 in words is "three billion, six hundred eighty-eight million, five hundred thirty-eight thousand, three hundred sixty-nine".