16168441 has 3 divisors (see below), whose sum is σ = 16172463. Its totient is φ = 16164420.

The previous prime is 16168433. The next prime is 16168447. The reversal of 16168441 is 14486161.

The square root of 16168441 is 4021.

It is a perfect power (a square), and thus also a powerful number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14486161 = 41 ⋅353321.

It can be written as a sum of positive squares in only one way, i.e., 958441 + 15210000 = 979^2 + 3900^2 .

It is not a de Polignac number, because 16168441 - 2³ = 16168433 is a prime.

It is a super-2 number, since 2×16168441² = 522836968740962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16168447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2011 + ... + 6031.

It is an arithmetic number, because the mean of its divisors is an integer number (5390821).

Almost surely, 2^16168441 is an apocalyptic number.

16168441 is the 4021-st square number.

16168441 is the 2011-st centered octagonal number.

It is an amenable number.

16168441 is a deficient number, since it is larger than the sum of its proper divisors (4022).

16168441 is an frugal number, since it uses more digits than its factorization.

16168441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8042 (or 4021 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The cubic root of 16168441 is about 252.8653848074.

The spelling of 16168441 in words is "sixteen million, one hundred sixty-eight thousand, four hundred forty-one".