1143500566 has 32 divisors (see below), whose sum is σ = 1920744000. Its totient is φ = 506943360.

The previous prime is 1143500549. The next prime is 1143500581. The reversal of 1143500566 is 6650053411.

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 15 ways as a sum of consecutive naturals, for example, 146236 + ... + 153856.

It is an arithmetic number, because the mean of its divisors is an integer number (60023250).

Almost surely, 2^1143500566 is an apocalyptic number.

1143500566 is a deficient number, since it is larger than the sum of its proper divisors (777243434).

1143500566 is a wasteful number, since it uses less digits than its factorization.

1143500566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7864.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1143500566 is about 33815.6852067203. The cubic root of 1143500566 is about 1045.7120871715.

Adding to 1143500566 its reverse (6650053411), we get a palindrome (7793553977).

The spelling of 1143500566 in words is "one billion, one hundred forty-three million, five hundred thousand, five hundred sixty-six".