6445319338 has 8 divisors (see below), whose sum is σ = 9873680832. Its totient is φ = 3154092396.

The previous prime is 6445319333. The next prime is 6445319357. The reversal of 6445319338 is 8339135446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (6445319333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34283520 + ... + 34283707.

It is an arithmetic number, because the mean of its divisors is an integer number (1234210104).

Almost surely, 2^6445319338 is an apocalyptic number.

6445319338 is a deficient number, since it is larger than the sum of its proper divisors (3428361494).

6445319338 is a wasteful number, since it uses less digits than its factorization.

6445319338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68567276.

The product of its digits is 933120, while the sum is 46.

The square root of 6445319338 is about 80282.7462036520. The cubic root of 6445319338 is about 1861.0075993223.

The spelling of 6445319338 in words is "six billion, four hundred forty-five million, three hundred nineteen thousand, three hundred thirty-eight".