16308641 has 2 divisors, whose sum is σ = 16308642. Its totient is φ = 16308640.

The previous prime is 16308637. The next prime is 16308667. The reversal of 16308641 is 14680361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 2876416 = 3665^2 + 1696^2 .

It is an emirp because it is prime and its reverse (14680361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16308641 - 2² = 16308637 is a prime.

It is not a weakly prime, because it can be changed into another prime (16308041) 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, 8154320 + 8154321.

It is an arithmetic number, because the mean of its divisors is an integer number (8154321).

Almost surely, 2^16308641 is an apocalyptic number.

It is an amenable number.

16308641 is a deficient number, since it is larger than the sum of its proper divisors (1).

16308641 is an equidigital number, since it uses as much as digits as its factorization.

16308641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 16308641 is about 4038.3958448869. The cubic root of 16308641 is about 253.5941656036.

The spelling of 16308641 in words is "sixteen million, three hundred eight thousand, six hundred forty-one".