4431641312 has 24 divisors (see below), whose sum is σ = 9971193456. Its totient is φ = 1899274752.

The previous prime is 4431641281. The next prime is 4431641321. The reversal of 4431641312 is 2131461344.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 9891833 + ... + 9892280.

It is an arithmetic number, because the mean of its divisors is an integer number (415466394).

Almost surely, 2^4431641312 is an apocalyptic number.

It is an amenable number.

4431641312 is an abundant number, since it is smaller than the sum of its proper divisors (5539552144).

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

4431641312 is a wasteful number, since it uses less digits than its factorization.

4431641312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19784130 (or 19784122 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 4431641312 is about 66570.5739197132. The cubic root of 4431641312 is about 1642.5611024825.

The spelling of 4431641312 in words is "four billion, four hundred thirty-one million, six hundred forty-one thousand, three hundred twelve".