18413111 has 2 divisors, whose sum is σ = 18413112. Its totient is φ = 18413110.

The previous prime is 18413107. The next prime is 18413113. The reversal of 18413111 is 11131481.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18413111 - 2² = 18413107 is a prime.

Together with 18413113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18413113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9206555 + 9206556.

It is an arithmetic number, because the mean of its divisors is an integer number (9206556).

Almost surely, 2^18413111 is an apocalyptic number.

18413111 is a deficient number, since it is larger than the sum of its proper divisors (1).

18413111 is an equidigital number, since it uses as much as digits as its factorization.

18413111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 20.

The square root of 18413111 is about 4291.0501045781. The cubic root of 18413111 is about 264.0639145449.

Adding to 18413111 its reverse (11131481), we get a palindrome (29544592).

The spelling of 18413111 in words is "eighteen million, four hundred thirteen thousand, one hundred eleven".