18064427 has 2 divisors, whose sum is σ = 18064428. Its totient is φ = 18064426.

The previous prime is 18064379. The next prime is 18064441. The reversal of 18064427 is 72446081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18064427 - 2⁶ = 18064363 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18064393 and 18064402.

It is not a weakly prime, because it can be changed into another prime (18064447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032213 + 9032214.

It is an arithmetic number, because the mean of its divisors is an integer number (9032214).

Almost surely, 2^18064427 is an apocalyptic number.

18064427 is a deficient number, since it is larger than the sum of its proper divisors (1).

18064427 is an equidigital number, since it uses as much as digits as its factorization.

18064427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 18064427 is about 4250.2266998361. The cubic root of 18064427 is about 262.3864458207.

The spelling of 18064427 in words is "eighteen million, sixty-four thousand, four hundred twenty-seven".