5018111993 has 2 divisors, whose sum is σ = 5018111994. Its totient is φ = 5018111992.

The previous prime is 5018111953. The next prime is 5018112041. The reversal of 5018111993 is 3991118105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4530232249 + 487879744 = 67307^2 + 22088^2 .

It is a cyclic number.

It is not a de Polignac number, because 5018111993 - 2¹⁸ = 5017849849 is a prime.

It is not a weakly prime, because it can be changed into another prime (5018111953) 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, 2509055996 + 2509055997.

It is an arithmetic number, because the mean of its divisors is an integer number (2509055997).

Almost surely, 2^5018111993 is an apocalyptic number.

It is an amenable number.

5018111993 is a deficient number, since it is larger than the sum of its proper divisors (1).

5018111993 is an equidigital number, since it uses as much as digits as its factorization.

5018111993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 38.

The square root of 5018111993 is about 70838.6334777853. The cubic root of 5018111993 is about 1712.0381967387.

The spelling of 5018111993 in words is "five billion, eighteen million, one hundred eleven thousand, nine hundred ninety-three".