18016423 has 2 divisors, whose sum is σ = 18016424. Its totient is φ = 18016422.

The previous prime is 18016421. The next prime is 18016433. The reversal of 18016423 is 32461081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18016423 - 2¹ = 18016421 is a prime.

Together with 18016421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18016421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9008211 + 9008212.

It is an arithmetic number, because the mean of its divisors is an integer number (9008212).

Almost surely, 2^18016423 is an apocalyptic number.

18016423 is a deficient number, since it is larger than the sum of its proper divisors (1).

18016423 is an equidigital number, since it uses as much as digits as its factorization.

18016423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 18016423 is about 4244.5757149567. The cubic root of 18016423 is about 262.1538197036.

The spelling of 18016423 in words is "eighteen million, sixteen thousand, four hundred twenty-three".