1143559912 has 16 divisors (see below), whose sum is σ = 2339100000. Its totient is φ = 519799920.

The previous prime is 1143559903. The next prime is 1143559913. The reversal of 1143559912 is 2199553411.

It is not an unprimeable number, because it can be changed into a prime (1143559913) 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 3 ways as a sum of consecutive naturals, for example, 6497412 + ... + 6497587.

It is an arithmetic number, because the mean of its divisors is an integer number (146193750).

Almost surely, 2^1143559912 is an apocalyptic number.

It is an amenable number.

1143559912 is an abundant number, since it is smaller than the sum of its proper divisors (1195540088).

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

1143559912 is a wasteful number, since it uses less digits than its factorization.

1143559912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12995016 (or 12995012 counting only the distinct ones).

The product of its digits is 48600, while the sum is 40.

The square root of 1143559912 is about 33816.5626875352. The cubic root of 1143559912 is about 1045.7301771657.

The spelling of 1143559912 in words is "one billion, one hundred forty-three million, five hundred fifty-nine thousand, nine hundred twelve".