4569311921 has 4 divisors (see below), whose sum is σ = 4570063092. Its totient is φ = 4568560752.

The previous prime is 4569311917. The next prime is 4569311939. The reversal of 4569311921 is 1291139654.

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 2972430400 + 1596881521 = 54520^2 + 39961^2 .

It is a cyclic number.

It is not a de Polignac number, because 4569311921 - 2² = 4569311917 is a prime.

It is a super-2 number, since 2×4569311921² = 41757222862785420482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4569311321) 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, 366386 + ... + 378651.

It is an arithmetic number, because the mean of its divisors is an integer number (1142515773).

Almost surely, 2^4569311921 is an apocalyptic number.

It is an amenable number.

4569311921 is a deficient number, since it is larger than the sum of its proper divisors (751171).

4569311921 is an equidigital number, since it uses as much as digits as its factorization.

4569311921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751170.

The product of its digits is 58320, while the sum is 41.

The square root of 4569311921 is about 67596.6857249673. The cubic root of 4569311921 is about 1659.3968778382.

The spelling of 4569311921 in words is "four billion, five hundred sixty-nine million, three hundred eleven thousand, nine hundred twenty-one".