3688816211 has 4 divisors (see below), whose sum is σ = 3816016800. Its totient is φ = 3561615624.

The previous prime is 3688816163. The next prime is 3688816267. The reversal of 3688816211 is 1126188863.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3688816211 - 2²⁶ = 3621707347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3688816711) 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, 63600251 + ... + 63600308.

It is an arithmetic number, because the mean of its divisors is an integer number (954004200).

Almost surely, 2^3688816211 is an apocalyptic number.

3688816211 is a deficient number, since it is larger than the sum of its proper divisors (127200589).

3688816211 is a wasteful number, since it uses less digits than its factorization.

3688816211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127200588.

The product of its digits is 110592, while the sum is 44.

The square root of 3688816211 is about 60735.6255504132. The cubic root of 3688816211 is about 1545.1204454300.

The spelling of 3688816211 in words is "three billion, six hundred eighty-eight million, eight hundred sixteen thousand, two hundred eleven".