6389813044 has 24 divisors (see below), whose sum is σ = 11378293920. Its totient is φ = 3138934944.

The previous prime is 6389813039. The next prime is 6389813047. The reversal of 6389813044 is 4403189836.

It is a junction number, because it is equal to n+sod(n) for n = 6389812985 and 6389813003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389813047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458767 + ... + 472489.

It is an arithmetic number, because the mean of its divisors is an integer number (474095580).

Almost surely, 2^6389813044 is an apocalyptic number.

It is an amenable number.

6389813044 is a deficient number, since it is larger than the sum of its proper divisors (4988480876).

6389813044 is a wasteful number, since it uses less digits than its factorization.

6389813044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15759 (or 15757 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 6389813044 is about 79936.3061693496. The cubic root of 6389813044 is about 1855.6499340545.

The spelling of 6389813044 in words is "six billion, three hundred eighty-nine million, eight hundred thirteen thousand, forty-four".