16750109 has 2 divisors, whose sum is σ = 16750110. Its totient is φ = 16750108.

The previous prime is 16750079. The next prime is 16750163. The reversal of 16750109 is 90105761.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11710084 + 5040025 = 3422^2 + 2245^2 .

It is an emirp because it is prime and its reverse (90105761) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16750109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16750009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8375054 + 8375055.

It is an arithmetic number, because the mean of its divisors is an integer number (8375055).

Almost surely, 2^16750109 is an apocalyptic number.

It is an amenable number.

16750109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16750109 is an equidigital number, since it uses as much as digits as its factorization.

16750109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 16750109 is about 4092.6897023840. The cubic root of 16750109 is about 255.8620523474.

The spelling of 16750109 in words is "sixteen million, seven hundred fifty thousand, one hundred nine".