4387543816 has 16 divisors (see below), whose sum is σ = 8260783740. Its totient is φ = 2184668160.

The previous prime is 4387543793. The next prime is 4387543877. The reversal of 4387543816 is 6183457834.

It can be written as a sum of positive squares in 2 ways, for example, as 3888021316 + 499522500 = 62354^2 + 22350^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4387543816.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135921 + ... + 1139776.

Almost surely, 2^4387543816 is an apocalyptic number.

It is an amenable number.

4387543816 is a deficient number, since it is larger than the sum of its proper divisors (3873239924).

4387543816 is a wasteful number, since it uses less digits than its factorization.

4387543816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275944 (or 2275940 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The square root of 4387543816 is about 66238.5372423033. The cubic root of 4387543816 is about 1637.0947741998.

The spelling of 4387543816 in words is "four billion, three hundred eighty-seven million, five hundred forty-three thousand, eight hundred sixteen".