18041911 has 2 divisors, whose sum is σ = 18041912. Its totient is φ = 18041910.

The previous prime is 18041873. The next prime is 18041921. The reversal of 18041911 is 11914081.

It is a strong prime.

It is an emirp because it is prime and its reverse (11914081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18041911 - 2¹⁵ = 18009143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18041921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9020955 + 9020956.

It is an arithmetic number, because the mean of its divisors is an integer number (9020956).

Almost surely, 2^18041911 is an apocalyptic number.

18041911 is a deficient number, since it is larger than the sum of its proper divisors (1).

18041911 is an equidigital number, since it uses as much as digits as its factorization.

18041911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 18041911 is about 4247.5770740506. The cubic root of 18041911 is about 262.2773852621.

Adding to 18041911 its reverse (11914081), we get a palindrome (29955992).

The spelling of 18041911 in words is "eighteen million, forty-one thousand, nine hundred eleven".