6538448940 has 48 divisors (see below), whose sum is σ = 18469690848. Its totient is φ = 1728154624.

The previous prime is 6538448927. The next prime is 6538448951. The reversal of 6538448940 is 498448356.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475407 + ... + 488966.

It is an arithmetic number, because the mean of its divisors is an integer number (384785226).

Almost surely, 2^6538448940 is an apocalyptic number.

6538448940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6538448940 is an abundant number, since it is smaller than the sum of its proper divisors (11931241908).

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

6538448940 is a wasteful number, since it uses less digits than its factorization.

6538448940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964498 (or 964496 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The square root of 6538448940 is about 80860.6761040248. The cubic root of 6538448940 is about 1869.9281183347.

The spelling of 6538448940 in words is "six billion, five hundred thirty-eight million, four hundred forty-eight thousand, nine hundred forty".