4001666303 has 2 divisors, whose sum is σ = 4001666304. Its totient is φ = 4001666302.

The previous prime is 4001666281. The next prime is 4001666309. The reversal of 4001666303 is 3036661004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4001666303 - 2⁸ = 4001666047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001666309) 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, 2000833151 + 2000833152.

It is an arithmetic number, because the mean of its divisors is an integer number (2000833152).

Almost surely, 2^4001666303 is an apocalyptic number.

4001666303 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001666303 is an equidigital number, since it uses as much as digits as its factorization.

4001666303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 4001666303 is about 63258.7251136158. The cubic root of 4001666303 is about 1587.6214456287.

The spelling of 4001666303 in words is "four billion, one million, six hundred sixty-six thousand, three hundred three".