4001118791 has 2 divisors, whose sum is σ = 4001118792. Its totient is φ = 4001118790.

The previous prime is 4001118787. The next prime is 4001118809. The reversal of 4001118791 is 1978111004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4001118791 - 2² = 4001118787 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001118761) 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, 2000559395 + 2000559396.

It is an arithmetic number, because the mean of its divisors is an integer number (2000559396).

Almost surely, 2^4001118791 is an apocalyptic number.

4001118791 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001118791 is an equidigital number, since it uses as much as digits as its factorization.

4001118791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 32.

The square root of 4001118791 is about 63254.3974044493. The cubic root of 4001118791 is about 1587.5490356730.

Adding to 4001118791 its reverse (1978111004), we get a palindrome (5979229795).

The spelling of 4001118791 in words is "four billion, one million, one hundred eighteen thousand, seven hundred ninety-one".