6438005000 has 80 divisors (see below), whose sum is σ = 17239231680. Its totient is φ = 2207304000.

The previous prime is 6438004987. The next prime is 6438005023. The reversal of 6438005000 is 5008346.

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 19 ways as a sum of consecutive naturals, for example, 56972 + ... + 126971.

It is an arithmetic number, because the mean of its divisors is an integer number (215490396).

Almost surely, 2^6438005000 is an apocalyptic number.

It is an amenable number.

6438005000 is an abundant number, since it is smaller than the sum of its proper divisors (10801226680).

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

6438005000 is a wasteful number, since it uses less digits than its factorization.

6438005000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183976 (or 183957 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 6438005000 is about 80237.1796613017. The cubic root of 6438005000 is about 1860.3033574660.

The spelling of 6438005000 in words is "six billion, four hundred thirty-eight million, five thousand".