18041671 has 2 divisors, whose sum is σ = 18041672. Its totient is φ = 18041670.

The previous prime is 18041663. The next prime is 18041711. The reversal of 18041671 is 17614081.

It is a weak prime.

It is an emirp because it is prime and its reverse (17614081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18041671 - 2³ = 18041663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18041371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9020835 + 9020836.

It is an arithmetic number, because the mean of its divisors is an integer number (9020836).

Almost surely, 2^18041671 is an apocalyptic number.

18041671 is a deficient number, since it is larger than the sum of its proper divisors (1).

18041671 is an equidigital number, since it uses as much as digits as its factorization.

18041671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 18041671 is about 4247.5488225564. The cubic root of 18041671 is about 262.2762222875.

The spelling of 18041671 in words is "eighteen million, forty-one thousand, six hundred seventy-one".