18254669 has 2 divisors, whose sum is σ = 18254670. Its totient is φ = 18254668.

The previous prime is 18254657. The next prime is 18254671. The reversal of 18254669 is 96645281.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17952169 + 302500 = 4237^2 + 550^2 .

It is an emirp because it is prime and its reverse (96645281) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18254669 is a prime.

It is a super-2 number, since 2×18254669² = 666465880599122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 18254671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18254699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9127334 + 9127335.

It is an arithmetic number, because the mean of its divisors is an integer number (9127335).

Almost surely, 2^18254669 is an apocalyptic number.

It is an amenable number.

18254669 is a deficient number, since it is larger than the sum of its proper divisors (1).

18254669 is an equidigital number, since it uses as much as digits as its factorization.

18254669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 18254669 is about 4272.5483028282. The cubic root of 18254669 is about 263.3043217874.

The spelling of 18254669 in words is "eighteen million, two hundred fifty-four thousand, six hundred sixty-nine".