918181819103 has 2 divisors, whose sum is σ = 918181819104. Its totient is φ = 918181819102.

The previous prime is 918181819099. The next prime is 918181819141. The reversal of 918181819103 is 301918181819.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (301918181819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 918181819103 - 2² = 918181819099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918181819193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459090909551 + 459090909552.

It is an arithmetic number, because the mean of its divisors is an integer number (459090909552).

Almost surely, 2^918181819103 is an apocalyptic number.

918181819103 is a deficient number, since it is larger than the sum of its proper divisors (1).

918181819103 is an equidigital number, since it uses as much as digits as its factorization.

918181819103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 50.

The spelling of 918181819103 in words is "nine hundred eighteen billion, one hundred eighty-one million, eight hundred nineteen thousand, one hundred three".