4006765891 has 2 divisors, whose sum is σ = 4006765892. Its totient is φ = 4006765890.

The previous prime is 4006765883. The next prime is 4006765901. The reversal of 4006765891 is 1985676004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4006765891 - 2³ = 4006765883 is a prime.

It is not a weakly prime, because it can be changed into another prime (4006765801) 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, 2003382945 + 2003382946.

It is an arithmetic number, because the mean of its divisors is an integer number (2003382946).

Almost surely, 2^4006765891 is an apocalyptic number.

4006765891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4006765891 is an equidigital number, since it uses as much as digits as its factorization.

4006765891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 4006765891 is about 63299.0196685541. The cubic root of 4006765891 is about 1588.2955630182.

The spelling of 4006765891 in words is "four billion, six million, seven hundred sixty-five thousand, eight hundred ninety-one".