6538944724 has 12 divisors (see below), whose sum is σ = 12323395924. Its totient is φ = 3017974464.

The previous prime is 6538944707. The next prime is 6538944739. The reversal of 6538944724 is 4274498356.

It can be written as a sum of positive squares in 2 ways, for example, as 2561372100 + 3977572624 = 50610^2 + 63068^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 125748937 = 6538944724 / (6 + 5 + 3 + 8 + 9 + 4 + 4 + 7 + 2 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62874417 + ... + 62874520.

Almost surely, 2^6538944724 is an apocalyptic number.

It is an amenable number.

6538944724 is a deficient number, since it is larger than the sum of its proper divisors (5784451200).

6538944724 is a wasteful number, since it uses less digits than its factorization.

6538944724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125748954 (or 125748952 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 52.

The square root of 6538944724 is about 80863.7417140711. The cubic root of 6538944724 is about 1869.9753801557.

The spelling of 6538944724 in words is "six billion, five hundred thirty-eight million, nine hundred forty-four thousand, seven hundred twenty-four".