2058446821 has 2 divisors, whose sum is σ = 2058446822. Its totient is φ = 2058446820.

The previous prime is 2058446813. The next prime is 2058446857. The reversal of 2058446821 is 1286448502.

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., 1083133921 + 975312900 = 32911^2 + 31230^2 .

It is a cyclic number.

It is not a de Polignac number, because 2058446821 - 2³ = 2058446813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2058446521) 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, 1029223410 + 1029223411.

It is an arithmetic number, because the mean of its divisors is an integer number (1029223411).

Almost surely, 2^2058446821 is an apocalyptic number.

It is an amenable number.

2058446821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2058446821 is an equidigital number, since it uses as much as digits as its factorization.

2058446821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 2058446821 is about 45370.1093342302. The cubic root of 2058446821 is about 1272.0764636092.

The spelling of 2058446821 in words is "two billion, fifty-eight million, four hundred forty-six thousand, eight hundred twenty-one".