30168449 has 2 divisors, whose sum is σ = 30168450. Its totient is φ = 30168448.

The previous prime is 30168379. The next prime is 30168451. The reversal of 30168449 is 94486103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15484225 + 14684224 = 3935^2 + 3832^2 .

It is a cyclic number.

It is not a de Polignac number, because 30168449 - 2¹² = 30164353 is a prime.

Together with 30168451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30168349) 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, 15084224 + 15084225.

It is an arithmetic number, because the mean of its divisors is an integer number (15084225).

Almost surely, 2^30168449 is an apocalyptic number.

It is an amenable number.

30168449 is a deficient number, since it is larger than the sum of its proper divisors (1).

30168449 is an equidigital number, since it uses as much as digits as its factorization.

30168449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 30168449 is about 5492.5812693123. The cubic root of 30168449 is about 311.3037323835.

The spelling of 30168449 in words is "thirty million, one hundred sixty-eight thousand, four hundred forty-nine".