4491318787 has 2 divisors, whose sum is σ = 4491318788. Its totient is φ = 4491318786.

The previous prime is 4491318779. The next prime is 4491318817. The reversal of 4491318787 is 7878131944.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4491318787 - 2³ = 4491318779 is a prime.

It is not a weakly prime, because it can be changed into another prime (4491316787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245659393 + 2245659394.

It is an arithmetic number, because the mean of its divisors is an integer number (2245659394).

Almost surely, 2^4491318787 is an apocalyptic number.

4491318787 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491318787 is an equidigital number, since it uses as much as digits as its factorization.

4491318787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 52.

The square root of 4491318787 is about 67017.3021465353. The cubic root of 4491318787 is about 1649.9012842074.

The spelling of 4491318787 in words is "four billion, four hundred ninety-one million, three hundred eighteen thousand, seven hundred eighty-seven".