6449018784 has 96 divisors (see below), whose sum is σ = 18819085824. Its totient is φ = 1920291840.

The previous prime is 6449018773. The next prime is 6449018789. The reversal of 6449018784 is 4878109446.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (6449018789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44659 + ... + 122034.

It is an arithmetic number, because the mean of its divisors is an integer number (196032144).

Almost surely, 2^6449018784 is an apocalyptic number.

It is an amenable number.

6449018784 is an abundant number, since it is smaller than the sum of its proper divisors (12370067040).

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

6449018784 is a wasteful number, since it uses less digits than its factorization.

6449018784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166750 (or 166742 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 6449018784 is about 80305.7830047127. The cubic root of 6449018784 is about 1861.3635879070.

The spelling of 6449018784 in words is "six billion, four hundred forty-nine million, eighteen thousand, seven hundred eighty-four".