1143782887 has 8 divisors (see below), whose sum is σ = 1265057696. Its totient is φ = 1027264032.

The previous prime is 1143782873. The next prime is 1143782891. The reversal of 1143782887 is 7882873411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143782887 - 2¹¹ = 1143780839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143782887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143782897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1188483 + ... + 1189444.

It is an arithmetic number, because the mean of its divisors is an integer number (158132212).

Almost surely, 2^1143782887 is an apocalyptic number.

1143782887 is a deficient number, since it is larger than the sum of its proper divisors (121274809).

1143782887 is a wasteful number, since it uses less digits than its factorization.

1143782887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377977.

The product of its digits is 602112, while the sum is 49.

The square root of 1143782887 is about 33819.8593580754. The cubic root of 1143782887 is about 1045.7981393630.

The spelling of 1143782887 in words is "one billion, one hundred forty-three million, seven hundred eighty-two thousand, eight hundred eighty-seven".