4065943841 has 4 divisors (see below), whose sum is σ = 4242724032. Its totient is φ = 3889163652.

The previous prime is 4065943829. The next prime is 4065943867. The reversal of 4065943841 is 1483495604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4065943841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4065943792 and 4065943801.

It is not an unprimeable number, because it can be changed into a prime (4065943241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88390061 + ... + 88390106.

It is an arithmetic number, because the mean of its divisors is an integer number (1060681008).

Almost surely, 2^4065943841 is an apocalyptic number.

It is an amenable number.

4065943841 is a deficient number, since it is larger than the sum of its proper divisors (176780191).

4065943841 is a wasteful number, since it uses less digits than its factorization.

4065943841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176780190.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 4065943841 is about 63764.7539084093. The cubic root of 4065943841 is about 1596.0768259333.

The spelling of 4065943841 in words is "four billion, sixty-five million, nine hundred forty-three thousand, eight hundred forty-one".