1143285329 has 2 divisors, whose sum is σ = 1143285330. Its totient is φ = 1143285328.

The previous prime is 1143285277. The next prime is 1143285331. The reversal of 1143285329 is 9235823411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 933180304 + 210105025 = 30548^2 + 14495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143285329 - 2²⁴ = 1126508113 is a prime.

Together with 1143285331, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1143285292 and 1143285301.

It is not a weakly prime, because it can be changed into another prime (1143285379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571642664 + 571642665.

It is an arithmetic number, because the mean of its divisors is an integer number (571642665).

Almost surely, 2^1143285329 is an apocalyptic number.

It is an amenable number.

1143285329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143285329 is an equidigital number, since it uses as much as digits as its factorization.

1143285329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 1143285329 is about 33812.5025545286. The cubic root of 1143285329 is about 1045.6464728458.

The spelling of 1143285329 in words is "one billion, one hundred forty-three million, two hundred eighty-five thousand, three hundred twenty-nine".