15328109 has 2 divisors, whose sum is σ = 15328110. Its totient is φ = 15328108.

The previous prime is 15328091. The next prime is 15328121. The reversal of 15328109 is 90182351.

Together with previous prime (15328091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14478025 + 850084 = 3805^2 + 922^2 .

It is a cyclic number.

It is not a de Polignac number, because 15328109 - 2⁸ = 15327853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15328139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7664054 + 7664055.

It is an arithmetic number, because the mean of its divisors is an integer number (7664055).

Almost surely, 2^15328109 is an apocalyptic number.

It is an amenable number.

15328109 is a deficient number, since it is larger than the sum of its proper divisors (1).

15328109 is an equidigital number, since it uses as much as digits as its factorization.

15328109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 15328109 is about 3915.1128974782. The cubic root of 15328109 is about 248.4064452488.

The spelling of 15328109 in words is "fifteen million, three hundred twenty-eight thousand, one hundred nine".