6813381432 has 128 divisors (see below), whose sum is σ = 20041781760. Its totient is φ = 1902942720.

The previous prime is 6813381427. The next prime is 6813381457. The reversal of 6813381432 is 2341833186.

It is a Harshad number since it is a multiple of its sum of digits (39).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3317718 + ... + 3319770.

It is an arithmetic number, because the mean of its divisors is an integer number (156576420).

Almost surely, 2^6813381432 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 6813381432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10020890880).

6813381432 is an abundant number, since it is smaller than the sum of its proper divisors (13228400328).

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

6813381432 is a wasteful number, since it uses less digits than its factorization.

6813381432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053 (or 3049 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 6813381432 is about 82543.2094844876. The cubic root of 6813381432 is about 1895.7783861221.

The spelling of 6813381432 in words is "six billion, eight hundred thirteen million, three hundred eighty-one thousand, four hundred thirty-two".