2021387933 has 2 divisors, whose sum is σ = 2021387934. Its totient is φ = 2021387932.

The previous prime is 2021387861. The next prime is 2021387969. The reversal of 2021387933 is 3397831202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1238899204 + 782488729 = 35198^2 + 27973^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021387933 - 2¹⁰ = 2021386909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2029387933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010693966 + 1010693967.

It is an arithmetic number, because the mean of its divisors is an integer number (1010693967).

Almost surely, 2^2021387933 is an apocalyptic number.

It is an amenable number.

2021387933 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021387933 is an equidigital number, since it uses as much as digits as its factorization.

2021387933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 2021387933 is about 44959.8480090847. The cubic root of 2021387933 is about 1264.3963193107.

The spelling of 2021387933 in words is "two billion, twenty-one million, three hundred eighty-seven thousand, nine hundred thirty-three".