1143243468 has 18 divisors (see below), whose sum is σ = 2889865524. Its totient is φ = 381081144.

The previous prime is 1143243461. The next prime is 1143243469. The reversal of 1143243468 is 8643423411.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 31756763 = 1143243468 / (1 + 1 + 4 + 3 + 2 + 4 + 3 + 4 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (1143243461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15878346 + ... + 15878417.

Almost surely, 2^1143243468 is an apocalyptic number.

1143243468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1143243468 is an abundant number, since it is smaller than the sum of its proper divisors (1746622056).

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

1143243468 is a wasteful number, since it uses less digits than its factorization.

1143243468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31756773 (or 31756768 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 1143243468 is about 33811.8835322731. The cubic root of 1143243468 is about 1045.6337106944.

Adding to 1143243468 its reverse (8643423411), we get a palindrome (9786666879).

The spelling of 1143243468 in words is "one billion, one hundred forty-three million, two hundred forty-three thousand, four hundred sixty-eight".