4068266921 has 2 divisors, whose sum is σ = 4068266922. Its totient is φ = 4068266920.

The previous prime is 4068266893. The next prime is 4068266929. The reversal of 4068266921 is 1296628604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3760755625 + 307511296 = 61325^2 + 17536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4068266921 is a prime.

It is not a weakly prime, because it can be changed into another prime (4068266929) 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, 2034133460 + 2034133461.

It is an arithmetic number, because the mean of its divisors is an integer number (2034133461).

Almost surely, 2^4068266921 is an apocalyptic number.

It is an amenable number.

4068266921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4068266921 is an equidigital number, since it uses as much as digits as its factorization.

4068266921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 4068266921 is about 63782.9673267088. The cubic root of 4068266921 is about 1596.3807412822.

The spelling of 4068266921 in words is "four billion, sixty-eight million, two hundred sixty-six thousand, nine hundred twenty-one".