4528613821 has 2 divisors, whose sum is σ = 4528613822. Its totient is φ = 4528613820.

The previous prime is 4528613807. The next prime is 4528613839. The reversal of 4528613821 is 1283168254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2628612900 + 1900000921 = 51270^2 + 43589^2 .

It is a cyclic number.

It is not a de Polignac number, because 4528613821 - 2²¹ = 4526516669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4528613851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2264306910 + 2264306911.

It is an arithmetic number, because the mean of its divisors is an integer number (2264306911).

Almost surely, 2^4528613821 is an apocalyptic number.

It is an amenable number.

4528613821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4528613821 is an equidigital number, since it uses as much as digits as its factorization.

4528613821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 40.

The square root of 4528613821 is about 67294.9761943639. The cubic root of 4528613821 is about 1654.4555208818.

The spelling of 4528613821 in words is "four billion, five hundred twenty-eight million, six hundred thirteen thousand, eight hundred twenty-one".