1143499228 has 6 divisors (see below), whose sum is σ = 2001123656. Its totient is φ = 571749612.

The previous prime is 1143499223. The next prime is 1143499241. The reversal of 1143499228 is 8229943411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143499223) by changing a digit.

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 as a sum of consecutive naturals, namely, 142937400 + ... + 142937407.

Almost surely, 2^1143499228 is an apocalyptic number.

It is an amenable number.

1143499228 is a deficient number, since it is larger than the sum of its proper divisors (857624428).

1143499228 is a wasteful number, since it uses less digits than its factorization.

1143499228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285874811 (or 285874809 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 1143499228 is about 33815.6654229959. The cubic root of 1143499228 is about 1045.7116793118.

The spelling of 1143499228 in words is "one billion, one hundred forty-three million, four hundred ninety-nine thousand, two hundred twenty-eight".