3945938316 has 96 divisors (see below), whose sum is σ = 9892108800. Its totient is φ = 1220567040.

The previous prime is 3945938287. The next prime is 3945938317. The reversal of 3945938316 is 6138395493.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3945938317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2799820 + ... + 2801228.

It is an arithmetic number, because the mean of its divisors is an integer number (103042800).

Almost surely, 2^3945938316 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 3945938316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4946054400).

3945938316 is an abundant number, since it is smaller than the sum of its proper divisors (5946170484).

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

3945938316 is a wasteful number, since it uses less digits than its factorization.

3945938316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679 (or 1677 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 51.

The square root of 3945938316 is about 62816.7041160232. The cubic root of 3945938316 is about 1580.2171249974.

The spelling of 3945938316 in words is "three billion, nine hundred forty-five million, nine hundred thirty-eight thousand, three hundred sixteen".