16338109 has 2 divisors, whose sum is σ = 16338110. Its totient is φ = 16338108.

The previous prime is 16338089. The next prime is 16338121. The reversal of 16338109 is 90183361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 3912484 = 3525^2 + 1978^2 .

It is an emirp because it is prime and its reverse (90183361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16338109 - 2²¹ = 14240957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16330109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8169054 + 8169055.

It is an arithmetic number, because the mean of its divisors is an integer number (8169055).

Almost surely, 2^16338109 is an apocalyptic number.

It is an amenable number.

16338109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16338109 is an equidigital number, since it uses as much as digits as its factorization.

16338109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 16338109 is about 4042.0426766673. The cubic root of 16338109 is about 253.7468130348.

The spelling of 16338109 in words is "sixteen million, three hundred thirty-eight thousand, one hundred nine".