6431939936 has 24 divisors (see below), whose sum is σ = 13407758280. Its totient is φ = 3026795008.

The previous prime is 6431939897. The next prime is 6431939947. The reversal of 6431939936 is 6399391346.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5911166 + ... + 5912253.

It is an arithmetic number, because the mean of its divisors is an integer number (558656595).

Almost surely, 2^6431939936 is an apocalyptic number.

It is an amenable number.

6431939936 is an abundant number, since it is smaller than the sum of its proper divisors (6975818344).

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

6431939936 is a wasteful number, since it uses less digits than its factorization.

6431939936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11823446 (or 11823438 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 53.

The square root of 6431939936 is about 80199.3761571747. The cubic root of 6431939936 is about 1859.7189940457.

The spelling of 6431939936 in words is "six billion, four hundred thirty-one million, nine hundred thirty-nine thousand, nine hundred thirty-six".