16268209 has 2 divisors, whose sum is σ = 16268210. Its totient is φ = 16268208.

The previous prime is 16268179. The next prime is 16268227. The reversal of 16268209 is 90286261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15186609 + 1081600 = 3897^2 + 1040^2 .

It is a cyclic number.

It is not a de Polignac number, because 16268209 - 2⁷ = 16268081 is a prime.

It is not a weakly prime, because it can be changed into another prime (16268309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8134104 + 8134105.

It is an arithmetic number, because the mean of its divisors is an integer number (8134105).

Almost surely, 2^16268209 is an apocalyptic number.

It is an amenable number.

16268209 is a deficient number, since it is larger than the sum of its proper divisors (1).

16268209 is an equidigital number, since it uses as much as digits as its factorization.

16268209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 16268209 is about 4033.3867902794. The cubic root of 16268209 is about 253.3844239447.

The spelling of 16268209 in words is "sixteen million, two hundred sixty-eight thousand, two hundred nine".