3921318288 has 120 divisors (see below), whose sum is σ = 11594793600. Its totient is φ = 1235119872.

The previous prime is 3921318251. The next prime is 3921318337. The reversal of 3921318288 is 8828131293.

It is a happy number.

3921318288 is a `hidden beast` number, since 39 + 21 + 318 + 288 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186283 + ... + 206261.

It is an arithmetic number, because the mean of its divisors is an integer number (96623280).

Almost surely, 2^3921318288 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 3921318288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5797396800).

3921318288 is an abundant number, since it is smaller than the sum of its proper divisors (7673475312).

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

3921318288 is a wasteful number, since it uses less digits than its factorization.

3921318288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20069 (or 20060 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 3921318288 is about 62620.4302763882. The cubic root of 3921318288 is about 1576.9237650807.

The spelling of 3921318288 in words is "three billion, nine hundred twenty-one million, three hundred eighteen thousand, two hundred eighty-eight".