1129785783 has 16 divisors (see below), whose sum is σ = 1796430336. Its totient is φ = 617522400.

The previous prime is 1129785757. The next prime is 1129785841. The reversal of 1129785783 is 3875879211.

It is not a de Polignac number, because 1129785783 - 2⁶ = 1129785719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129785703) 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 15 ways as a sum of consecutive naturals, for example, 1169068 + ... + 1170033.

It is an arithmetic number, because the mean of its divisors is an integer number (112276896).

Almost surely, 2^1129785783 is an apocalyptic number.

1129785783 is a deficient number, since it is larger than the sum of its proper divisors (666644553).

1129785783 is a wasteful number, since it uses less digits than its factorization.

1129785783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339134.

The product of its digits is 846720, while the sum is 51.

The square root of 1129785783 is about 33612.2861912129. The cubic root of 1129785783 is about 1041.5146147881.

The spelling of 1129785783 in words is "one billion, one hundred twenty-nine million, seven hundred eighty-five thousand, seven hundred eighty-three".