6438830464 has 32 divisors (see below), whose sum is σ = 13993484040. Its totient is φ = 2926740480.

The previous prime is 6438830443. The next prime is 6438830483. The reversal of 6438830464 is 4640388346.

It is a tau number, because it is divible by the number of its divisors (32).

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, 2285109 + ... + 2287924.

Almost surely, 2^6438830464 is an apocalyptic number.

6438830464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6438830464 is an abundant number, since it is smaller than the sum of its proper divisors (7554653576).

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

6438830464 is a wasteful number, since it uses less digits than its factorization.

6438830464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573058 (or 4573046 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The square root of 6438830464 is about 80242.3233960732. The cubic root of 6438830464 is about 1860.3828617961.

The spelling of 6438830464 in words is "six billion, four hundred thirty-eight million, eight hundred thirty thousand, four hundred sixty-four".