6500442838 has 4 divisors (see below), whose sum is σ = 9750664260. Its totient is φ = 3250221418.

The previous prime is 6500442821. The next prime is 6500442853. The reversal of 6500442838 is 8382440056.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6500442838.

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 as a sum of consecutive naturals, namely, 1625110708 + ... + 1625110711.

It is an arithmetic number, because the mean of its divisors is an integer number (2437666065).

Almost surely, 2^6500442838 is an apocalyptic number.

6500442838 is a deficient number, since it is larger than the sum of its proper divisors (3250221422).

6500442838 is a wasteful number, since it uses less digits than its factorization.

6500442838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250221421.

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 6500442838 is about 80625.3238009002. The cubic root of 6500442838 is about 1866.2979594404.

The spelling of 6500442838 in words is "six billion, five hundred million, four hundred forty-two thousand, eight hundred thirty-eight".