18181818119 has 2 divisors, whose sum is σ = 18181818120. Its totient is φ = 18181818118.

The previous prime is 18181818103. The next prime is 18181818209. The reversal of 18181818119 is 91181818181.

It is a weak prime.

It is an emirp because it is prime and its reverse (91181818181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18181818119 - 2⁴ = 18181818103 is a prime.

It is a super-2 number, since 2×18181818119² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18181808119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9090909059 + 9090909060.

It is an arithmetic number, because the mean of its divisors is an integer number (9090909060).

Almost surely, 2^18181818119 is an apocalyptic number.

18181818119 is a deficient number, since it is larger than the sum of its proper divisors (1).

18181818119 is an equidigital number, since it uses as much as digits as its factorization.

18181818119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 47.

The spelling of 18181818119 in words is "eighteen billion, one hundred eighty-one million, eight hundred eighteen thousand, one hundred nineteen".