1143109816 has 8 divisors (see below), whose sum is σ = 2143330920. Its totient is φ = 571554904.

The previous prime is 1143109811. The next prime is 1143109817. The reversal of 1143109816 is 6189013411.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143109811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71444356 + ... + 71444371.

It is an arithmetic number, because the mean of its divisors is an integer number (267916365).

Almost surely, 2^1143109816 is an apocalyptic number.

It is an amenable number.

1143109816 is a deficient number, since it is larger than the sum of its proper divisors (1000221104).

1143109816 is a wasteful number, since it uses less digits than its factorization.

1143109816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142888733 (or 142888729 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 1143109816 is about 33809.9070687868. The cubic root of 1143109816 is about 1045.5929621613.

The spelling of 1143109816 in words is "one billion, one hundred forty-three million, one hundred nine thousand, eight hundred sixteen".