3861636116 has 24 divisors (see below), whose sum is σ = 7284255720. Its totient is φ = 1780687872.

The previous prime is 3861636067. The next prime is 3861636131. The reversal of 3861636116 is 6116361683.

It can be written as a sum of positive squares in 4 ways, for example, as 3984016 + 3857652100 = 1996^2 + 62110^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25820 + ... + 91596.

It is an arithmetic number, because the mean of its divisors is an integer number (303510655).

Almost surely, 2^3861636116 is an apocalyptic number.

It is an amenable number.

3861636116 is a deficient number, since it is larger than the sum of its proper divisors (3422619604).

3861636116 is a wasteful number, since it uses less digits than its factorization.

3861636116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66923 (or 66921 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 3861636116 is about 62142.0639824588. The cubic root of 3861636116 is about 1568.8826100689.

Adding to 3861636116 its reverse (6116361683), we get a palindrome (9977997799).

The spelling of 3861636116 in words is "three billion, eight hundred sixty-one million, six hundred thirty-six thousand, one hundred sixteen".