4867564021 has 2 divisors, whose sum is σ = 4867564022. Its totient is φ = 4867564020.

The previous prime is 4867563979. The next prime is 4867564033. The reversal of 4867564021 is 1204657684.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4068653796 + 798910225 = 63786^2 + 28265^2 .

It is a cyclic number.

It is not a de Polignac number, because 4867564021 - 2¹⁹ = 4867039733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4867564621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2433782010 + 2433782011.

It is an arithmetic number, because the mean of its divisors is an integer number (2433782011).

Almost surely, 2^4867564021 is an apocalyptic number.

It is an amenable number.

4867564021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4867564021 is an equidigital number, since it uses as much as digits as its factorization.

4867564021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 4867564021 is about 69767.9297456933. The cubic root of 4867564021 is about 1694.7431639226.

The spelling of 4867564021 in words is "four billion, eight hundred sixty-seven million, five hundred sixty-four thousand, twenty-one".