6499931382 has 96 divisors (see below), whose sum is σ = 16326984960. Its totient is φ = 1830548160.

The previous prime is 6499931323. The next prime is 6499931387. The reversal of 6499931382 is 2831399946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6499931387) 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 47 ways as a sum of consecutive naturals, for example, 2896753 + ... + 2898995.

It is an arithmetic number, because the mean of its divisors is an integer number (170072760).

Almost surely, 2^6499931382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6499931382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8163492480).

6499931382 is an abundant number, since it is smaller than the sum of its proper divisors (9827053578).

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

6499931382 is a wasteful number, since it uses less digits than its factorization.

6499931382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578 (or 2575 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 6499931382 is about 80622.1519310915. The cubic root of 6499931382 is about 1866.2490112714.

The spelling of 6499931382 in words is "six billion, four hundred ninety-nine million, nine hundred thirty-one thousand, three hundred eighty-two".