1143110988 has 96 divisors (see below), whose sum is σ = 3070269440. Its totient is φ = 367416000.

The previous prime is 1143110981. The next prime is 1143110989. The reversal of 1143110988 is 8890113411.

It is a super-3 number, since 3×1143110988³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1143110981) 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 in 31 ways as a sum of consecutive naturals, for example, 1409103 + ... + 1409913.

Almost surely, 2^1143110988 is an apocalyptic number.

1143110988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143110988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1535134720).

1143110988 is an abundant number, since it is smaller than the sum of its proper divisors (1927158452).

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

1143110988 is a wasteful number, since it uses less digits than its factorization.

1143110988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1268 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 1143110988 is about 33809.9244009803. The cubic root of 1143110988 is about 1045.5933195007.

The spelling of 1143110988 in words is "one billion, one hundred forty-three million, one hundred ten thousand, nine hundred eighty-eight".