4542220789 has 2 divisors, whose sum is σ = 4542220790. Its totient is φ = 4542220788.

The previous prime is 4542220759. The next prime is 4542220841. The reversal of 4542220789 is 9870222454.

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., 4427837764 + 114383025 = 66542^2 + 10695^2 .

It is a cyclic number.

It is not a de Polignac number, because 4542220789 - 2³¹ = 2394737141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4542220759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271110394 + 2271110395.

It is an arithmetic number, because the mean of its divisors is an integer number (2271110395).

Almost surely, 2^4542220789 is an apocalyptic number.

It is an amenable number.

4542220789 is a deficient number, since it is larger than the sum of its proper divisors (1).

4542220789 is an equidigital number, since it uses as much as digits as its factorization.

4542220789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 4542220789 is about 67395.9997996914. Note that the first 3 decimals coincide. The cubic root of 4542220789 is about 1656.1108923082.

The spelling of 4542220789 in words is "four billion, five hundred forty-two million, two hundred twenty thousand, seven hundred eighty-nine".