18473671 has 2 divisors, whose sum is σ = 18473672. Its totient is φ = 18473670.

The previous prime is 18473633. The next prime is 18473699. The reversal of 18473671 is 17637481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18473671 - 2⁹ = 18473159 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18473671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18473621) 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, 9236835 + 9236836.

It is an arithmetic number, because the mean of its divisors is an integer number (9236836).

Almost surely, 2^18473671 is an apocalyptic number.

18473671 is a deficient number, since it is larger than the sum of its proper divisors (1).

18473671 is an equidigital number, since it uses as much as digits as its factorization.

18473671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 18473671 is about 4298.1008596821. The cubic root of 18473671 is about 264.3530963602.

The spelling of 18473671 in words is "eighteen million, four hundred seventy-three thousand, six hundred seventy-one".