4220861573 has 2 divisors, whose sum is σ = 4220861574. Its totient is φ = 4220861572.

The previous prime is 4220861569. The next prime is 4220861581. The reversal of 4220861573 is 3751680224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2825241409 + 1395620164 = 53153^2 + 37358^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220861573 - 2² = 4220861569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4220861773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110430786 + 2110430787.

It is an arithmetic number, because the mean of its divisors is an integer number (2110430787).

Almost surely, 2^4220861573 is an apocalyptic number.

It is an amenable number.

4220861573 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220861573 is an equidigital number, since it uses as much as digits as its factorization.

4220861573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 4220861573 is about 64968.1581468953. The cubic root of 4220861573 is about 1616.0955575141.

The spelling of 4220861573 in words is "four billion, two hundred twenty million, eight hundred sixty-one thousand, five hundred seventy-three".