18127469 has 2 divisors, whose sum is σ = 18127470. Its totient is φ = 18127468.

The previous prime is 18127451. The next prime is 18127493. The reversal of 18127469 is 96472181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13875625 + 4251844 = 3725^2 + 2062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18127469 is a prime.

It is a super-2 number, since 2×18127469² = 657210264691922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18127969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9063734 + 9063735.

It is an arithmetic number, because the mean of its divisors is an integer number (9063735).

Almost surely, 2^18127469 is an apocalyptic number.

It is an amenable number.

18127469 is a deficient number, since it is larger than the sum of its proper divisors (1).

18127469 is an equidigital number, since it uses as much as digits as its factorization.

18127469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 18127469 is about 4257.6365509517. The cubic root of 18127469 is about 262.6913205391.

The spelling of 18127469 in words is "eighteen million, one hundred twenty-seven thousand, four hundred sixty-nine".