6438325968 has 120 divisors (see below), whose sum is σ = 18969268032. Its totient is φ = 2034514944.

The previous prime is 6438325919. The next prime is 6438325979. The reversal of 6438325968 is 8695238346.

6438325968 is a `hidden beast` number, since 6 + 4 + 383 + 259 + 6 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 365655 + ... + 382857.

Almost surely, 2^6438325968 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 6438325968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9484634016).

6438325968 is an abundant number, since it is smaller than the sum of its proper divisors (12530942064).

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

6438325968 is a wasteful number, since it uses less digits than its factorization.

6438325968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17353 (or 17344 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The square root of 6438325968 is about 80239.1797565254. The cubic root of 6438325968 is about 1860.3342722150.

The spelling of 6438325968 in words is "six billion, four hundred thirty-eight million, three hundred twenty-five thousand, nine hundred sixty-eight".