1143223188 has 48 divisors (see below), whose sum is σ = 2858755200. Its totient is φ = 354651264.

The previous prime is 1143223187. The next prime is 1143223199. The reversal of 1143223188 is 8813223411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143223187) 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 in 15 ways as a sum of consecutive naturals, for example, 45763 + ... + 66186.

It is an arithmetic number, because the mean of its divisors is an integer number (59557400).

Almost surely, 2^1143223188 is an apocalyptic number.

It is an amenable number.

1143223188 is an abundant number, since it is smaller than the sum of its proper divisors (1715532012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143223188 is a wasteful number, since it uses less digits than its factorization.

1143223188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112016 (or 112014 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 1143223188 is about 33811.5836363812. The cubic root of 1143223188 is about 1045.6275278245.

Adding to 1143223188 its reverse (8813223411), we get a palindrome (9956446599).

It can be divided in two parts, 1143223 and 188, that added together give a palindrome (1143411).

The spelling of 1143223188 in words is "one billion, one hundred forty-three million, two hundred twenty-three thousand, one hundred eighty-eight".