3913831649328 has 80 divisors (see below), whose sum is σ = 10310898247776. Its totient is φ = 1278827530240.

The previous prime is 3913831649323. The next prime is 3913831649347. The reversal of 3913831649328 is 8239461383193.

It is not an unprimeable number, because it can be changed into a prime (3913831649323) 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 15 ways as a sum of consecutive naturals, for example, 2089558 + ... + 3491978.

Almost surely, 2^{3913831649328} 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 3913831649328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5155449123888).

3913831649328 is an abundant number, since it is smaller than the sum of its proper divisors (6397066598448).

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

3913831649328 is a wasteful number, since it uses less digits than its factorization.

3913831649328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403582 (or 1403576 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 60.

The spelling of 3913831649328 in words is "three trillion, nine hundred thirteen billion, eight hundred thirty-one million, six hundred forty-nine thousand, three hundred twenty-eight".