16145449 has 2 divisors, whose sum is σ = 16145450. Its totient is φ = 16145448.

The previous prime is 16145413. The next prime is 16145453. The reversal of 16145449 is 94454161.

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., 11971600 + 4173849 = 3460^2 + 2043^2 .

It is a cyclic number.

It is not a de Polignac number, because 16145449 - 2⁷ = 16145321 is a prime.

It is not a weakly prime, because it can be changed into another prime (16155449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8072724 + 8072725.

It is an arithmetic number, because the mean of its divisors is an integer number (8072725).

Almost surely, 2^16145449 is an apocalyptic number.

It is an amenable number.

16145449 is a deficient number, since it is larger than the sum of its proper divisors (1).

16145449 is an equidigital number, since it uses as much as digits as its factorization.

16145449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 16145449 is about 4018.1399925836. The cubic root of 16145449 is about 252.7454672688.

The spelling of 16145449 in words is "sixteen million, one hundred forty-five thousand, four hundred forty-nine".