4160843921 has 4 divisors (see below), whose sum is σ = 4480908852. Its totient is φ = 3840778992.

The previous prime is 4160843909. The next prime is 4160843927. The reversal of 4160843921 is 1293480614.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1377226321 + 2783617600 = 37111^2 + 52760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4160843921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4160843927) 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, 160032446 + ... + 160032471.

It is an arithmetic number, because the mean of its divisors is an integer number (1120227213).

Almost surely, 2^4160843921 is an apocalyptic number.

It is an amenable number.

4160843921 is a deficient number, since it is larger than the sum of its proper divisors (320064931).

4160843921 is a wasteful number, since it uses less digits than its factorization.

4160843921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320064930.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 4160843921 is about 64504.6038744522. The cubic root of 4160843921 is about 1608.3990516881.

The spelling of 4160843921 in words is "four billion, one hundred sixty million, eight hundred forty-three thousand, nine hundred twenty-one".