16143289 has 2 divisors, whose sum is σ = 16143290. Its totient is φ = 16143288.

The previous prime is 16143287. The next prime is 16143301. The reversal of 16143289 is 98234161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15642025 + 501264 = 3955^2 + 708^2 .

It is a cyclic number.

It is not a de Polignac number, because 16143289 - 2¹ = 16143287 is a prime.

Together with 16143287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16143287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8071644 + 8071645.

It is an arithmetic number, because the mean of its divisors is an integer number (8071645).

Almost surely, 2^16143289 is an apocalyptic number.

It is an amenable number.

16143289 is a deficient number, since it is larger than the sum of its proper divisors (1).

16143289 is an equidigital number, since it uses as much as digits as its factorization.

16143289 is an odious number, because the sum of its binary digits is odd.

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

The square root of 16143289 is about 4017.8712025151. The cubic root of 16143289 is about 252.7341956806.

The spelling of 16143289 in words is "sixteen million, one hundred forty-three thousand, two hundred eighty-nine".