4568943921 has 4 divisors (see below), whose sum is σ = 6091925232. Its totient is φ = 3045962612.

The previous prime is 4568943913. The next prime is 4568943923. The reversal of 4568943921 is 1293498654.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4568943921 - 2³ = 4568943913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4568943923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761490651 + ... + 761490656.

It is an arithmetic number, because the mean of its divisors is an integer number (1522981308).

Almost surely, 2^4568943921 is an apocalyptic number.

It is an amenable number.

4568943921 is a deficient number, since it is larger than the sum of its proper divisors (1522981311).

4568943921 is a wasteful number, since it uses less digits than its factorization.

4568943921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522981310.

The product of its digits is 1866240, while the sum is 51.

The square root of 4568943921 is about 67593.9636432130. The cubic root of 4568943921 is about 1659.3523288663.

The spelling of 4568943921 in words is "four billion, five hundred sixty-eight million, nine hundred forty-three thousand, nine hundred twenty-one".