4613224021 has 6 divisors (see below), whose sum is σ = 5366403510. Its totient is φ = 3954191976.

The previous prime is 4613223949. The next prime is 4613224027. The reversal of 4613224021 is 1204223164.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3353683921 + 1259540100 = 57911^2 + 35490^2 .

It is not a de Polignac number, because 4613224021 - 2¹⁷ = 4613092949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4613224027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47073666 + ... + 47073763.

It is an arithmetic number, because the mean of its divisors is an integer number (894400585).

Almost surely, 2^4613224021 is an apocalyptic number.

It is an amenable number.

4613224021 is a deficient number, since it is larger than the sum of its proper divisors (753179489).

4613224021 is an equidigital number, since it uses as much as digits as its factorization.

4613224021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94147443 (or 94147436 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 4613224021 is about 67920.7186431357. The cubic root of 4613224021 is about 1664.6956636382.

Adding to 4613224021 its reverse (1204223164), we get a palindrome (5817447185).

The spelling of 4613224021 in words is "four billion, six hundred thirteen million, two hundred twenty-four thousand, twenty-one".