18448429 has 2 divisors, whose sum is σ = 18448430. Its totient is φ = 18448428.

The previous prime is 18448403. The next prime is 18448447. The reversal of 18448429 is 92484481.

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., 14645929 + 3802500 = 3827^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 18448429 - 2⁷ = 18448301 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18448391 and 18448400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18445429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9224214 + 9224215.

It is an arithmetic number, because the mean of its divisors is an integer number (9224215).

Almost surely, 2^18448429 is an apocalyptic number.

It is an amenable number.

18448429 is a deficient number, since it is larger than the sum of its proper divisors (1).

18448429 is an equidigital number, since it uses as much as digits as its factorization.

18448429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73728, while the sum is 40.

The square root of 18448429 is about 4295.1634427574. The cubic root of 18448429 is about 264.2326394794.

The spelling of 18448429 in words is "eighteen million, four hundred forty-eight thousand, four hundred twenty-nine".