4081813185 has 32 divisors (see below), whose sum is σ = 6572160000. Its totient is φ = 2163253248.

The previous prime is 4081813157. The next prime is 4081813193. The reversal of 4081813185 is 5813181804.

4081813185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-4081813185 is a prime.

It is a super-2 number, since 2×4081813185² = 33322397754479688450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3267441 + ... + 3268689.

It is an arithmetic number, because the mean of its divisors is an integer number (205380000).

Almost surely, 2^4081813185 is an apocalyptic number.

It is an amenable number.

4081813185 is a deficient number, since it is larger than the sum of its proper divisors (2490346815).

4081813185 is a wasteful number, since it uses less digits than its factorization.

4081813185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457.

The product of its (nonzero) digits is 30720, while the sum is 39.

The square root of 4081813185 is about 63889.0693702765. The cubic root of 4081813185 is about 1598.1506216620.

Adding to 4081813185 its reverse (5813181804), we get a palindrome (9894994989).

The spelling of 4081813185 in words is "four billion, eighty-one million, eight hundred thirteen thousand, one hundred eighty-five".