2033442821 has 2 divisors, whose sum is σ = 2033442822. Its totient is φ = 2033442820.

The previous prime is 2033442791. The next prime is 2033442863. The reversal of 2033442821 is 1282443302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2018704900 + 14737921 = 44930^2 + 3839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2033442821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2033442221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1016721410 + 1016721411.

It is an arithmetic number, because the mean of its divisors is an integer number (1016721411).

Almost surely, 2^2033442821 is an apocalyptic number.

It is an amenable number.

2033442821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2033442821 is an equidigital number, since it uses as much as digits as its factorization.

2033442821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 2033442821 is about 45093.7115460682. The cubic root of 2033442821 is about 1266.9048195406.

The spelling of 2033442821 in words is "two billion, thirty-three million, four hundred forty-two thousand, eight hundred twenty-one".