4568263921 has 4 divisors (see below), whose sum is σ = 4919668852. Its totient is φ = 4216858992.

The previous prime is 4568263897. The next prime is 4568263957. The reversal of 4568263921 is 1293628654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1293628654 = 2 ⋅646814327.

It can be written as a sum of positive squares in 2 ways, for example, as 2200079025 + 2368184896 = 46905^2 + 48664^2 .

It is a cyclic number.

It is not a de Polignac number, because 4568263921 - 2¹³ = 4568255729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4568263961) 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 in 3 ways as a sum of consecutive naturals, for example, 175702446 + ... + 175702471.

It is an arithmetic number, because the mean of its divisors is an integer number (1229917213).

Almost surely, 2^4568263921 is an apocalyptic number.

It is an amenable number.

4568263921 is a deficient number, since it is larger than the sum of its proper divisors (351404931).

4568263921 is a wasteful number, since it uses less digits than its factorization.

4568263921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351404930.

The product of its digits is 622080, while the sum is 46.

The square root of 4568263921 is about 67588.9334210860. The cubic root of 4568263921 is about 1659.2700038195.

The spelling of 4568263921 in words is "four billion, five hundred sixty-eight million, two hundred sixty-three thousand, nine hundred twenty-one".