3806445791 has 2 divisors, whose sum is σ = 3806445792. Its totient is φ = 3806445790.

The previous prime is 3806445787. The next prime is 3806445827. The reversal of 3806445791 is 1975446083.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3806445791 - 2² = 3806445787 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3806445091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1903222895 + 1903222896.

It is an arithmetic number, because the mean of its divisors is an integer number (1903222896).

Almost surely, 2^3806445791 is an apocalyptic number.

3806445791 is a deficient number, since it is larger than the sum of its proper divisors (1).

3806445791 is an equidigital number, since it uses as much as digits as its factorization.

3806445791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 3806445791 is about 61696.4001461998. The cubic root of 3806445791 is about 1561.3725853794.

The spelling of 3806445791 in words is "three billion, eight hundred six million, four hundred forty-five thousand, seven hundred ninety-one".