6531949716 has 24 divisors (see below), whose sum is σ = 15350868960. Its totient is φ = 2161651872.

The previous prime is 6531949709. The next prime is 6531949741. The reversal of 6531949716 is 6179491356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1956351 + ... + 1959686.

It is an arithmetic number, because the mean of its divisors is an integer number (639619540).

Almost surely, 2^6531949716 is an apocalyptic number.

It is an amenable number.

6531949716 is an abundant number, since it is smaller than the sum of its proper divisors (8818919244).

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

6531949716 is a wasteful number, since it uses less digits than its factorization.

6531949716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916183 (or 3916181 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 51.

The square root of 6531949716 is about 80820.4783207820. The cubic root of 6531949716 is about 1869.3083428718.

The spelling of 6531949716 in words is "six billion, five hundred thirty-one million, nine hundred forty-nine thousand, seven hundred sixteen".