4532581813 has 4 divisors (see below), whose sum is σ = 4542677100. Its totient is φ = 4522486528.

The previous prime is 4532581811. The next prime is 4532581819. The reversal of 4532581813 is 3181852354.

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 1425968644 + 3106613169 = 37762^2 + 55737^2 .

It is a cyclic number.

It is not a de Polignac number, because 4532581813 - 2¹ = 4532581811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4532581811) by changing a digit.

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, 5046970 + ... + 5047867.

It is an arithmetic number, because the mean of its divisors is an integer number (1135669275).

Almost surely, 2^4532581813 is an apocalyptic number.

It is an amenable number.

4532581813 is a deficient number, since it is larger than the sum of its proper divisors (10095287).

4532581813 is a wasteful number, since it uses less digits than its factorization.

4532581813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10095286.

The product of its digits is 115200, while the sum is 40.

The square root of 4532581813 is about 67324.4518210137. The cubic root of 4532581813 is about 1654.9385936332.

The spelling of 4532581813 in words is "four billion, five hundred thirty-two million, five hundred eighty-one thousand, eight hundred thirteen".