3138843680 has 96 divisors (see below), whose sum is σ = 8494585344. Its totient is φ = 1073673216.

The previous prime is 3138843667. The next prime is 3138843691. The reversal of 3138843680 is 863488313.

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, 515534 + ... + 521586.

It is an arithmetic number, because the mean of its divisors is an integer number (88485264).

Almost surely, 2^3138843680 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 3138843680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4247292672).

3138843680 is an abundant number, since it is smaller than the sum of its proper divisors (5355741664).

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

3138843680 is a wasteful number, since it uses less digits than its factorization.

3138843680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6538 (or 6530 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 3138843680 is about 56025.3842467858. The cubic root of 3138843680 is about 1464.1645778331.

The spelling of 3138843680 in words is "three billion, one hundred thirty-eight million, eight hundred forty-three thousand, six hundred eighty".