18214171 has 2 divisors, whose sum is σ = 18214172. Its totient is φ = 18214170.

The previous prime is 18214111. The next prime is 18214201. The reversal of 18214171 is 17141281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18214171 - 2⁷ = 18214043 is a prime.

It is not a weakly prime, because it can be changed into another prime (18214111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9107085 + 9107086.

It is an arithmetic number, because the mean of its divisors is an integer number (9107086).

Almost surely, 2^18214171 is an apocalyptic number.

18214171 is a deficient number, since it is larger than the sum of its proper divisors (1).

18214171 is an equidigital number, since it uses as much as digits as its factorization.

18214171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 25.

The square root of 18214171 is about 4267.8063451848. The cubic root of 18214171 is about 263.1094639921.

The spelling of 18214171 in words is "eighteen million, two hundred fourteen thousand, one hundred seventy-one".