1143999073 has 16 divisors (see below), whose sum is σ = 1331527680. Its totient is φ = 962614800.

The previous prime is 1143999049. The next prime is 1143999083. The reversal of 1143999073 is 3709993411.

It is not a de Polignac number, because 1143999073 - 2²⁹ = 607128161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1143999013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113968 + ... + 123598.

It is an arithmetic number, because the mean of its divisors is an integer number (83220480).

Almost surely, 2^1143999073 is an apocalyptic number.

It is an amenable number.

1143999073 is a deficient number, since it is larger than the sum of its proper divisors (187528607).

1143999073 is an equidigital number, since it uses as much as digits as its factorization.

1143999073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9948.

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 1143999073 is about 33823.0553469080. The cubic root of 1143999073 is about 1045.8640238581.

The spelling of 1143999073 in words is "one billion, one hundred forty-three million, nine hundred ninety-nine thousand, seventy-three".