6531486018 has 32 divisors (see below), whose sum is σ = 13759891200. Its totient is φ = 2061165456.

The previous prime is 6531486011. The next prime is 6531486041. The reversal of 6531486018 is 8106841356.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6531486011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154813 + ... + 192431.

It is an arithmetic number, because the mean of its divisors is an integer number (429996600).

Almost surely, 2^6531486018 is an apocalyptic number.

6531486018 is an abundant number, since it is smaller than the sum of its proper divisors (7228405182).

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

6531486018 is a wasteful number, since it uses less digits than its factorization.

6531486018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39166.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 6531486018 is about 80817.6095786061. The cubic root of 6531486018 is about 1869.2641082461.

The spelling of 6531486018 in words is "six billion, five hundred thirty-one million, four hundred eighty-six thousand, eighteen".