18110118469 has 2 divisors, whose sum is σ = 18110118470. Its totient is φ = 18110118468.

The previous prime is 18110118463. The next prime is 18110118539. The reversal of 18110118469 is 96481101181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15717636900 + 2392481569 = 125370^2 + 48913^2 .

It is a cyclic number.

It is not a de Polignac number, because 18110118469 - 2²³ = 18101729861 is a prime.

It is a super-2 number, since 2×18110118469² (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 (18110118463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9055059234 + 9055059235.

It is an arithmetic number, because the mean of its divisors is an integer number (9055059235).

Almost surely, 2^18110118469 is an apocalyptic number.

It is an amenable number.

18110118469 is a deficient number, since it is larger than the sum of its proper divisors (1).

18110118469 is an equidigital number, since it uses as much as digits as its factorization.

18110118469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 40.

The spelling of 18110118469 in words is "eighteen billion, one hundred ten million, one hundred eighteen thousand, four hundred sixty-nine".