18914111 has 2 divisors, whose sum is σ = 18914112. Its totient is φ = 18914110.

The previous prime is 18914099. The next prime is 18914113. The reversal of 18914111 is 11141981.

It is a strong prime.

It is an emirp because it is prime and its reverse (11141981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18914111 - 2¹⁸ = 18651967 is a prime.

It is a Sophie Germain prime.

Together with 18914113, 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 (18914113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9457055 + 9457056.

It is an arithmetic number, because the mean of its divisors is an integer number (9457056).

Almost surely, 2^18914111 is an apocalyptic number.

18914111 is a deficient number, since it is larger than the sum of its proper divisors (1).

18914111 is an equidigital number, since it uses as much as digits as its factorization.

18914111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 26.

The square root of 18914111 is about 4349.0356402311. The cubic root of 18914111 is about 266.4374761656.

The spelling of 18914111 in words is "eighteen million, nine hundred fourteen thousand, one hundred eleven".