18468871 has 2 divisors, whose sum is σ = 18468872. Its totient is φ = 18468870.

The previous prime is 18468859. The next prime is 18468899. The reversal of 18468871 is 17886481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18468871 - 2¹⁹ = 17944583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18468811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9234435 + 9234436.

It is an arithmetic number, because the mean of its divisors is an integer number (9234436).

Almost surely, 2^18468871 is an apocalyptic number.

18468871 is a deficient number, since it is larger than the sum of its proper divisors (1).

18468871 is an equidigital number, since it uses as much as digits as its factorization.

18468871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 43.

The square root of 18468871 is about 4297.5424372541. The cubic root of 18468871 is about 264.3301988217.

The spelling of 18468871 in words is "eighteen million, four hundred sixty-eight thousand, eight hundred seventy-one".