4231841665 has 4 divisors (see below), whose sum is σ = 5078210004. Its totient is φ = 3385473328.

The previous prime is 4231841639. The next prime is 4231841681. The reversal of 4231841665 is 5661481324.

It is a happy number.

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 1541033536 + 2690808129 = 39256^2 + 51873^2 .

It is a cyclic number.

It is not a de Polignac number, because 4231841665 - 2¹¹ = 4231839617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423184162 + ... + 423184171.

It is an arithmetic number, because the mean of its divisors is an integer number (1269552501).

Almost surely, 2^4231841665 is an apocalyptic number.

It is an amenable number.

4231841665 is a deficient number, since it is larger than the sum of its proper divisors (846368339).

4231841665 is an equidigital number, since it uses as much as digits as its factorization.

4231841665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846368338.

The product of its digits is 138240, while the sum is 40.

The square root of 4231841665 is about 65052.6069039512. The cubic root of 4231841665 is about 1617.4957071202.

The spelling of 4231841665 in words is "four billion, two hundred thirty-one million, eight hundred forty-one thousand, six hundred sixty-five".