1143806118 has 144 divisors (see below), whose sum is σ = 3028218480. Its totient is φ = 285441408.

The previous prime is 1143806033. The next prime is 1143806129. The reversal of 1143806118 is 8116083411.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1379328 + ... + 1380156.

It is an arithmetic number, because the mean of its divisors is an integer number (21029295).

Almost surely, 2^1143806118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143806118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1514109240).

1143806118 is an abundant number, since it is smaller than the sum of its proper divisors (1884412362).

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

1143806118 is a wasteful number, since it uses less digits than its factorization.

1143806118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 1143806118 is about 33820.2028083807. The cubic root of 1143806118 is about 1045.8052196030.

Adding to 1143806118 its reverse (8116083411), we get a palindrome (9259889529).

The spelling of 1143806118 in words is "one billion, one hundred forty-three million, eight hundred six thousand, one hundred eighteen".