4581640273 has 16 divisors (see below), whose sum is σ = 5513967360. Its totient is φ = 3721899456.

The previous prime is 4581640253. The next prime is 4581640289. The reversal of 4581640273 is 3720461854.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4581640273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4581640253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112990 + ... + 148087.

It is an arithmetic number, because the mean of its divisors is an integer number (344622960).

Almost surely, 2^4581640273 is an apocalyptic number.

It is an amenable number.

4581640273 is a deficient number, since it is larger than the sum of its proper divisors (932327087).

4581640273 is a wasteful number, since it uses less digits than its factorization.

4581640273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261216.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 4581640273 is about 67687.8148044388. The cubic root of 4581640273 is about 1660.8879307547.

The spelling of 4581640273 in words is "four billion, five hundred eighty-one million, six hundred forty thousand, two hundred seventy-three".