16485309 has 8 divisors (see below), whose sum is σ = 24422720. Its totient is φ = 10990188.

The previous prime is 16485307. The next prime is 16485317. The reversal of 16485309 is 90358461.

16485309 is a `hidden beast` number, since 1 + 648 + 5 + 3 + 0 + 9 = 666.

It is not a de Polignac number, because 16485309 - 2¹ = 16485307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16485307) 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 in 7 ways as a sum of consecutive naturals, for example, 305257 + ... + 305310.

It is an arithmetic number, because the mean of its divisors is an integer number (3052840).

Almost surely, 2^16485309 is an apocalyptic number.

It is an amenable number.

16485309 is a deficient number, since it is larger than the sum of its proper divisors (7937411).

16485309 is an equidigital number, since it uses as much as digits as its factorization.

16485309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610576 (or 610570 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 16485309 is about 4060.2104625253. The cubic root of 16485309 is about 254.5065891457.

The spelling of 16485309 in words is "sixteen million, four hundred eighty-five thousand, three hundred nine".