4487131688 has 16 divisors (see below), whose sum is σ = 9060554580. Its totient is φ = 2070983808.

The previous prime is 4487131681. The next prime is 4487131699. The reversal of 4487131688 is 8861317844.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4464645124 + 22486564 = 66818^2 + 4742^2 .

It is not an unprimeable number, because it can be changed into a prime (4487131681) 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 3 ways as a sum of consecutive naturals, for example, 21572645 + ... + 21572852.

Almost surely, 2^4487131688 is an apocalyptic number.

It is an amenable number.

4487131688 is an abundant number, since it is smaller than the sum of its proper divisors (4573422892).

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

4487131688 is a wasteful number, since it uses less digits than its factorization.

4487131688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43145516 (or 43145512 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 50.

The square root of 4487131688 is about 66986.0559221096. The cubic root of 4487131688 is about 1649.3884097604.

The spelling of 4487131688 in words is "four billion, four hundred eighty-seven million, one hundred thirty-one thousand, six hundred eighty-eight".