16609123 has 2 divisors, whose sum is σ = 16609124. Its totient is φ = 16609122.

The previous prime is 16609121. The next prime is 16609127. The reversal of 16609123 is 32190661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16609123 - 2¹ = 16609121 is a prime.

Together with 16609121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16609091 and 16609100.

It is not a weakly prime, because it can be changed into another prime (16609121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8304561 + 8304562.

It is an arithmetic number, because the mean of its divisors is an integer number (8304562).

Almost surely, 2^16609123 is an apocalyptic number.

16609123 is a deficient number, since it is larger than the sum of its proper divisors (1).

16609123 is an equidigital number, since it uses as much as digits as its factorization.

16609123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 16609123 is about 4075.4291798533. The cubic root of 16609123 is about 255.1421634558.

Adding to 16609123 its reverse (32190661), we get a palindrome (48799784).

The spelling of 16609123 in words is "sixteen million, six hundred nine thousand, one hundred twenty-three".