4100665891 has 24 divisors (see below), whose sum is σ = 4863490800. Its totient is φ = 3446452800.

The previous prime is 4100665873. The next prime is 4100665901. The reversal of 4100665891 is 1985660014.

4100665891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4100665891 - 2⁹ = 4100665379 is a prime.

It is a super-2 number, since 2×4100665891² = 33630921499221647762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4100665841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1041196 + ... + 1045126.

It is an arithmetic number, because the mean of its divisors is an integer number (202645450).

Almost surely, 2^4100665891 is an apocalyptic number.

4100665891 is a deficient number, since it is larger than the sum of its proper divisors (762824909).

4100665891 is a wasteful number, since it uses less digits than its factorization.

4100665891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355 (or 4348 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 4100665891 is about 64036.4418983441. The cubic root of 4100665891 is about 1600.6073073476.

The spelling of 4100665891 in words is "four billion, one hundred million, six hundred sixty-five thousand, eight hundred ninety-one".