1129782863 has 4 divisors (see below), whose sum is σ = 1232490408. Its totient is φ = 1027075320.

The previous prime is 1129782847. The next prime is 1129782881. The reversal of 1129782863 is 3682879211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1129782863 - 2⁴ = 1129782847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129782163) 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 3 ways as a sum of consecutive naturals, for example, 51353756 + ... + 51353777.

It is an arithmetic number, because the mean of its divisors is an integer number (308122602).

Almost surely, 2^1129782863 is an apocalyptic number.

1129782863 is a deficient number, since it is larger than the sum of its proper divisors (102707545).

1129782863 is a wasteful number, since it uses less digits than its factorization.

1129782863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102707544.

The product of its digits is 290304, while the sum is 47.

The square root of 1129782863 is about 33612.2427546869. The cubic root of 1129782863 is about 1041.5137175014.

The spelling of 1129782863 in words is "one billion, one hundred twenty-nine million, seven hundred eighty-two thousand, eight hundred sixty-three".