3920816616 has 64 divisors (see below), whose sum is σ = 10039360320. Its totient is φ = 1275555840.

The previous prime is 3920816597. The next prime is 3920816677. The reversal of 3920816616 is 6166180293.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237511 + ... + 253481.

It is an arithmetic number, because the mean of its divisors is an integer number (156865005).

Almost surely, 2^3920816616 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 3920816616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5019680160).

3920816616 is an abundant number, since it is smaller than the sum of its proper divisors (6118543704).

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

3920816616 is a wasteful number, since it uses less digits than its factorization.

3920816616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16226 (or 16222 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 3920816616 is about 62616.4244907037. The cubic root of 3920816616 is about 1576.8565145474.

The spelling of 3920816616 in words is "three billion, nine hundred twenty million, eight hundred sixteen thousand, six hundred sixteen".