6488345844 has 18 divisors (see below), whose sum is σ = 16401096530. Its totient is φ = 2162781936.

The previous prime is 6488345813. The next prime is 6488345869. The reversal of 6488345844 is 4485438846.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5896396944 + 591948900 = 76788^2 + 24330^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90115879 + ... + 90115950.

Almost surely, 2^6488345844 is an apocalyptic number.

It is an amenable number.

6488345844 is an abundant number, since it is smaller than the sum of its proper divisors (9912750686).

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

6488345844 is a wasteful number, since it uses less digits than its factorization.

6488345844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180231839 (or 180231834 counting only the distinct ones).

The product of its digits is 11796480, while the sum is 54.

The square root of 6488345844 is about 80550.2690498300. The cubic root of 6488345844 is about 1865.1395453185.

The spelling of 6488345844 in words is "six billion, four hundred eighty-eight million, three hundred forty-five thousand, eight hundred forty-four".