4165641861 has 16 divisors (see below), whose sum is σ = 5713306368. Its totient is φ = 2698099200.

The previous prime is 4165641839. The next prime is 4165641881. The reversal of 4165641861 is 1681465614.

4165641861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4165641861 - 2⁵ = 4165641829 is a prime.

It is a super-2 number, since 2×4165641861² = 34705144228231086642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4165641881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40621 + ... + 99906.

It is an arithmetic number, because the mean of its divisors is an integer number (357081648).

Almost surely, 2^4165641861 is an apocalyptic number.

4165641861 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4165641861 is a deficient number, since it is larger than the sum of its proper divisors (1547664507).

4165641861 is a wasteful number, since it uses less digits than its factorization.

4165641861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140812.

The product of its digits is 138240, while the sum is 42.

The square root of 4165641861 is about 64541.7838380688. The cubic root of 4165641861 is about 1609.0170383264.

The spelling of 4165641861 in words is "four billion, one hundred sixty-five million, six hundred forty-one thousand, eight hundred sixty-one".