18254449 has 2 divisors, whose sum is σ = 18254450. Its totient is φ = 18254448.

The previous prime is 18254429. The next prime is 18254461. The reversal of 18254449 is 94445281.

18254449 = T₃₄₈₇ + T₃₄₈₈ + T₃₄₈₉.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15944049 + 2310400 = 3993^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 18254449 - 2⁵ = 18254417 is a prime.

It is not a weakly prime, because it can be changed into another prime (18254429) 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, 9127224 + 9127225.

It is an arithmetic number, because the mean of its divisors is an integer number (9127225).

Almost surely, 2^18254449 is an apocalyptic number.

18254449 is the 3489-th centered triangular number.

It is an amenable number.

18254449 is a deficient number, since it is larger than the sum of its proper divisors (1).

18254449 is an equidigital number, since it uses as much as digits as its factorization.

18254449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 37.

The square root of 18254449 is about 4272.5225569914. The cubic root of 18254449 is about 263.3032640273.

The spelling of 18254449 in words is "eighteen million, two hundred fifty-four thousand, four hundred forty-nine".