1143385166 has 16 divisors (see below), whose sum is σ = 2138279040. Its totient is φ = 445474680.

The previous prime is 1143385141. The next prime is 1143385171. The reversal of 1143385166 is 6615833411.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3712136 + ... + 3712443.

It is an arithmetic number, because the mean of its divisors is an integer number (133642440).

Almost surely, 2^1143385166 is an apocalyptic number.

1143385166 is a deficient number, since it is larger than the sum of its proper divisors (994893874).

1143385166 is a wasteful number, since it uses less digits than its factorization.

1143385166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7424599.

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

The square root of 1143385166 is about 33813.9788549056. The cubic root of 1143385166 is about 1045.6769088666.

The spelling of 1143385166 in words is "one billion, one hundred forty-three million, three hundred eighty-five thousand, one hundred sixty-six".