18954911 has 2 divisors, whose sum is σ = 18954912. Its totient is φ = 18954910.

The previous prime is 18954907. The next prime is 18954917. The reversal of 18954911 is 11945981.

It is a weak prime.

It is an emirp because it is prime and its reverse (11945981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18954911 - 2² = 18954907 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18954917) 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, 9477455 + 9477456.

It is an arithmetic number, because the mean of its divisors is an integer number (9477456).

Almost surely, 2^18954911 is an apocalyptic number.

18954911 is a deficient number, since it is larger than the sum of its proper divisors (1).

18954911 is an equidigital number, since it uses as much as digits as its factorization.

18954911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 38.

The square root of 18954911 is about 4353.7238084196. The cubic root of 18954911 is about 266.6289177469.

The spelling of 18954911 in words is "eighteen million, nine hundred fifty-four thousand, nine hundred eleven".