4546790821 has 2 divisors, whose sum is σ = 4546790822. Its totient is φ = 4546790820.

The previous prime is 4546790819. The next prime is 4546790827. The reversal of 4546790821 is 1280976454.

4546790821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4430366721 + 116424100 = 66561^2 + 10790^2 .

It is a cyclic number.

It is not a de Polignac number, because 4546790821 - 2¹ = 4546790819 is a prime.

Together with 4546790819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4546790827) 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 as a sum of consecutive naturals, namely, 2273395410 + 2273395411.

It is an arithmetic number, because the mean of its divisors is an integer number (2273395411).

Almost surely, 2^4546790821 is an apocalyptic number.

It is an amenable number.

4546790821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4546790821 is an equidigital number, since it uses as much as digits as its factorization.

4546790821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 4546790821 is about 67429.8956027666. The cubic root of 4546790821 is about 1656.6661231280. Note that the first 3 decimals are identical.

The spelling of 4546790821 in words is "four billion, five hundred forty-six million, seven hundred ninety thousand, eight hundred twenty-one".