18000469 has 2 divisors, whose sum is σ = 18000470. Its totient is φ = 18000468.

The previous prime is 18000457. The next prime is 18000473. The reversal of 18000469 is 96400081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16499844 + 1500625 = 4062^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 18000469 - 2¹⁵ = 17967701 is a prime.

It is a super-2 number, since 2×18000469² = 648033768439922, which contains 22 as substring.

It is a Chen prime.

It is equal to p_1151389 and since 18000469 and 1151389 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18000439) 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, 9000234 + 9000235.

It is an arithmetic number, because the mean of its divisors is an integer number (9000235).

Almost surely, 2^18000469 is an apocalyptic number.

It is an amenable number.

18000469 is a deficient number, since it is larger than the sum of its proper divisors (1).

18000469 is an equidigital number, since it uses as much as digits as its factorization.

18000469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 18000469 is about 4242.6959589393. The cubic root of 18000469 is about 262.0764155636.

The spelling of 18000469 in words is "eighteen million, four hundred sixty-nine", and thus it is an aban number.