3691693616 has 80 divisors (see below), whose sum is σ = 8585388000. Its totient is φ = 1519202304.

The previous prime is 3691693589. The next prime is 3691693619. The reversal of 3691693616 is 6163961963.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3691693619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39710 + ... + 94658.

It is an arithmetic number, because the mean of its divisors is an integer number (107317350).

Almost surely, 2^3691693616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3691693616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4292694000).

3691693616 is an abundant number, since it is smaller than the sum of its proper divisors (4893694384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3691693616 is a wasteful number, since it uses less digits than its factorization.

3691693616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55006 (or 55000 counting only the distinct ones).

The product of its digits is 944784, while the sum is 50.

The square root of 3691693616 is about 60759.3088834954. The cubic root of 3691693616 is about 1545.5220902529.

The spelling of 3691693616 in words is "three billion, six hundred ninety-one million, six hundred ninety-three thousand, six hundred sixteen".