16168849 has 4 divisors (see below), whose sum is σ = 16180020. Its totient is φ = 16157680.

The previous prime is 16168813. The next prime is 16168861. The reversal of 16168849 is 94886161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7507600 + 8661249 = 2740^2 + 2943^2 .

It is a cyclic number.

It is not a de Polignac number, because 16168849 - 2⁹ = 16168337 is a prime.

It is a super-2 number, since 2×16168849² = 522863355969602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16148849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3022 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (4045005).

Almost surely, 2^16168849 is an apocalyptic number.

It is an amenable number.

16168849 is a deficient number, since it is larger than the sum of its proper divisors (11171).

16168849 is an equidigital number, since it uses as much as digits as its factorization.

16168849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11170.

The product of its digits is 82944, while the sum is 43.

The square root of 16168849 is about 4021.0507333283. The cubic root of 16168849 is about 252.8675117535.

The spelling of 16168849 in words is "sixteen million, one hundred sixty-eight thousand, eight hundred forty-nine".