3921318289 has 8 divisors (see below), whose sum is σ = 4487432768. Its totient is φ = 3356685360.

The previous prime is 3921318251. The next prime is 3921318337. The reversal of 3921318289 is 9828131293.

3921318289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3921318289 - 2⁷ = 3921318161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3921318689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364707 + ... + 375304.

It is an arithmetic number, because the mean of its divisors is an integer number (560929096).

Almost surely, 2^3921318289 is an apocalyptic number.

It is an amenable number.

3921318289 is a deficient number, since it is larger than the sum of its proper divisors (566114479).

3921318289 is an equidigital number, since it uses as much as digits as its factorization.

3921318289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740775.

The product of its digits is 186624, while the sum is 46.

The square root of 3921318289 is about 62620.4302843728. The cubic root of 3921318289 is about 1576.9237652147.

The spelling of 3921318289 in words is "three billion, nine hundred twenty-one million, three hundred eighteen thousand, two hundred eighty-nine".