16012109 has 2 divisors, whose sum is σ = 16012110. Its totient is φ = 16012108.

The previous prime is 16012097. The next prime is 16012121. The reversal of 16012109 is 90121061.

It is a balanced prime because it is at equal distance from previous prime (16012097) and next prime (16012121).

It can be written as a sum of positive squares in only one way, i.e., 15976009 + 36100 = 3997^2 + 190^2 .

It is a cyclic number.

It is not a de Polignac number, because 16012109 - 2⁴ = 16012093 is a prime.

It is a Chen prime.

It is equal to p_1031834 and since 16012109 and 1031834 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16012159) 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, 8006054 + 8006055.

It is an arithmetic number, because the mean of its divisors is an integer number (8006055).

Almost surely, 2^16012109 is an apocalyptic number.

It is an amenable number.

16012109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16012109 is an equidigital number, since it uses as much as digits as its factorization.

16012109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 16012109 is about 4001.5133387257. The cubic root of 16012109 is about 252.0477622159.

The spelling of 16012109 in words is "sixteen million, twelve thousand, one hundred nine".