918281819113 has 2 divisors, whose sum is σ = 918281819114. Its totient is φ = 918281819112.

The previous prime is 918281819087. The next prime is 918281819129. The reversal of 918281819113 is 311918182819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 702959834329 + 215321984784 = 838427^2 + 464028^2 .

It is an emirp because it is prime and its reverse (311918182819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 918281819113 - 2¹⁷ = 918281688041 is a prime.

It is not a weakly prime, because it can be changed into another prime (918281819173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459140909556 + 459140909557.

It is an arithmetic number, because the mean of its divisors is an integer number (459140909557).

Almost surely, 2^918281819113 is an apocalyptic number.

It is an amenable number.

918281819113 is a deficient number, since it is larger than the sum of its proper divisors (1).

918281819113 is an equidigital number, since it uses as much as digits as its factorization.

918281819113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 52.

The spelling of 918281819113 in words is "nine hundred eighteen billion, two hundred eighty-one million, eight hundred nineteen thousand, one hundred thirteen".