1129716811 has 4 divisors (see below), whose sum is σ = 1129788112. Its totient is φ = 1129645512.

The previous prime is 1129716799. The next prime is 1129716821. The reversal of 1129716811 is 1186179211.

It is a happy number.

1129716811 is a nontrivial binomial coefficient, being equal to C(47534, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(1129716811) divides (1129716811-1)³.

It is a cyclic number.

It is not a de Polignac number, because 1129716811 - 2¹¹ = 1129714763 is a prime.

It is a deceptive number, since it divides R_1129716810.

It is not an unprimeable number, because it can be changed into a prime (1129716821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 47533.

It is an arithmetic number, because the mean of its divisors is an integer number (282447028).

Almost surely, 2^1129716811 is an apocalyptic number.

1129716811 is the 47533-rd triangular number and also the 23767-th hexagonal number.

1129716811 is the 15845-th centered nonagonal number.

1129716811 is a deficient number, since it is larger than the sum of its proper divisors (71301).

1129716811 is an equidigital number, since it uses as much as digits as its factorization.

1129716811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71300.

The product of its digits is 6048, while the sum is 37.

The square root of 1129716811 is about 33611.2601816713. The cubic root of 1129716811 is about 1041.4934199714.

The spelling of 1129716811 in words is "one billion, one hundred twenty-nine million, seven hundred sixteen thousand, eight hundred eleven".