16445113 has 2 divisors, whose sum is σ = 16445114. Its totient is φ = 16445112.

The previous prime is 16445111. The next prime is 16445119. The reversal of 16445113 is 31154461.

16445113 = 2867² + 2868².

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8225424 + 8219689 = 2868^2 + 2867^2 .

It is a cyclic number.

It is not a de Polignac number, because 16445113 - 2¹ = 16445111 is a prime.

Together with 16445111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16445111) 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, 8222556 + 8222557.

It is an arithmetic number, because the mean of its divisors is an integer number (8222557).

Almost surely, 2^16445113 is an apocalyptic number.

16445113 is the 2868-th centered square number.

It is an amenable number.

16445113 is a deficient number, since it is larger than the sum of its proper divisors (1).

16445113 is an equidigital number, since it uses as much as digits as its factorization.

16445113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 16445113 is about 4055.2574517532. The cubic root of 16445113 is about 254.2995669857.

Adding to 16445113 its reverse (31154461), we get a palindrome (47599574).

The spelling of 16445113 in words is "sixteen million, four hundred forty-five thousand, one hundred thirteen".