1143147544 has 32 divisors (see below), whose sum is σ = 2672294400. Its totient is φ = 445381920.

The previous prime is 1143147529. The next prime is 1143147553. The reversal of 1143147544 is 4457413411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927264 + ... + 928495.

It is an arithmetic number, because the mean of its divisors is an integer number (83509200).

Almost surely, 2^1143147544 is an apocalyptic number.

1143147544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1143147544 is an abundant number, since it is smaller than the sum of its proper divisors (1529146856).

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

1143147544 is a wasteful number, since it uses less digits than its factorization.

1143147544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1855783 (or 1855779 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 1143147544 is about 33810.4650071542. The cubic root of 1143147544 is about 1045.6044651965.

The spelling of 1143147544 in words is "one billion, one hundred forty-three million, one hundred forty-seven thousand, five hundred forty-four".