1129766543 has 16 divisors (see below), whose sum is σ = 1250440800. Its totient is φ = 1016426880.

The previous prime is 1129766531. The next prime is 1129766549. The reversal of 1129766543 is 3456679211.

It is a Cunningham number, because it is equal to 33612²-1.

It is a cyclic number.

It is not a de Polignac number, because 1129766543 - 2¹⁴ = 1129750159 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1129766494 and 1129766503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129766549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16805 + ... + 50417.

It is an arithmetic number, because the mean of its divisors is an integer number (78152550).

Almost surely, 2^1129766543 is an apocalyptic number.

1129766543 is a deficient number, since it is larger than the sum of its proper divisors (120674257).

1129766543 is a wasteful number, since it uses less digits than its factorization.

1129766543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33722.

The product of its digits is 272160, while the sum is 44.

The square root of 1129766543 is about 33611.9999851244. Note that the first 4 decimals coincide. The cubic root of 1129766543 is about 1041.5087025007.

The spelling of 1129766543 in words is "one billion, one hundred twenty-nine million, seven hundred sixty-six thousand, five hundred forty-three".