16635149 has 2 divisors, whose sum is σ = 16635150. Its totient is φ = 16635148.

The previous prime is 16635119. The next prime is 16635169. The reversal of 16635149 is 94153661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14364100 + 2271049 = 3790^2 + 1507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16635149 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16635119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8317574 + 8317575.

It is an arithmetic number, because the mean of its divisors is an integer number (8317575).

Almost surely, 2^16635149 is an apocalyptic number.

It is an amenable number.

16635149 is a deficient number, since it is larger than the sum of its proper divisors (1).

16635149 is an equidigital number, since it uses as much as digits as its factorization.

16635149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The square root of 16635149 is about 4078.6209679253. The cubic root of 16635149 is about 255.2753606262.

The spelling of 16635149 in words is "sixteen million, six hundred thirty-five thousand, one hundred forty-nine".