16434281 has 2 divisors, whose sum is σ = 16434282. Its totient is φ = 16434280.

The previous prime is 16434277. The next prime is 16434283. The reversal of 16434281 is 18243461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16000000 + 434281 = 4000^2 + 659^2 .

It is a cyclic number.

It is not a de Polignac number, because 16434281 - 2² = 16434277 is a prime.

It is a super-2 number, since 2×16434281² = 540171183973922, which contains 22 as substring.

Together with 16434283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16434283) 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, 8217140 + 8217141.

It is an arithmetic number, because the mean of its divisors is an integer number (8217141).

Almost surely, 2^16434281 is an apocalyptic number.

It is an amenable number.

16434281 is a deficient number, since it is larger than the sum of its proper divisors (1).

16434281 is an equidigital number, since it uses as much as digits as its factorization.

16434281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The square root of 16434281 is about 4053.9216815326. The cubic root of 16434281 is about 254.2437210550.

It can be divided in two parts, 16 and 434281, that multiplied together give a palindrome (6948496).

The spelling of 16434281 in words is "sixteen million, four hundred thirty-four thousand, two hundred eighty-one".