4081988836 has 12 divisors (see below), whose sum is σ = 7145663728. Its totient is φ = 2040370632.

The previous prime is 4081988783. The next prime is 4081988837. The reversal of 4081988836 is 6388891804.

It is not an unprimeable number, because it can be changed into a prime (4081988837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141066 + ... + 167521.

Almost surely, 2^4081988836 is an apocalyptic number.

It is an amenable number.

4081988836 is a deficient number, since it is larger than the sum of its proper divisors (3063674892).

4081988836 is a wasteful number, since it uses less digits than its factorization.

4081988836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311898 (or 311896 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The square root of 4081988836 is about 63890.4440116047. Note that the first 3 decimals coincide. The cubic root of 4081988836 is about 1598.1735455209.

The spelling of 4081988836 in words is "four billion, eighty-one million, nine hundred eighty-eight thousand, eight hundred thirty-six".