16002109 has 2 divisors, whose sum is σ = 16002110. Its totient is φ = 16002108.

The previous prime is 16002101. The next prime is 16002163. The reversal of 16002109 is 90120061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9474084 + 6528025 = 3078^2 + 2555^2 .

It is a cyclic number.

It is not a de Polignac number, because 16002109 - 2³ = 16002101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16002101) 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, 8001054 + 8001055.

It is an arithmetic number, because the mean of its divisors is an integer number (8001055).

Almost surely, 2^16002109 is an apocalyptic number.

It is an amenable number.

16002109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16002109 is an equidigital number, since it uses as much as digits as its factorization.

16002109 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 19.

The square root of 16002109 is about 4000.2636163133. The cubic root of 16002109 is about 251.9952810488.

The spelling of 16002109 in words is "sixteen million, two thousand, one hundred nine".