1129528161 has 12 divisors (see below), whose sum is σ = 1727513892. Its totient is φ = 708723456.

The previous prime is 1129528151. The next prime is 1129528181. The reversal of 1129528161 is 1618259211.

1129528161 is a `hidden beast` number, since 1 + 129 + 528 + 1 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 470065761 + 659462400 = 21681^2 + 25680^2 .

It is not a de Polignac number, because 1129528161 - 2⁵ = 1129528129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1129528151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3691116 + ... + 3691421.

It is an arithmetic number, because the mean of its divisors is an integer number (143959491).

Almost surely, 2^1129528161 is an apocalyptic number.

It is an amenable number.

1129528161 is a deficient number, since it is larger than the sum of its proper divisors (597985731).

1129528161 is a wasteful number, since it uses less digits than its factorization.

1129528161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382560 (or 7382557 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 1129528161 is about 33608.4537133145. The cubic root of 1129528161 is about 1041.4354441822.

The spelling of 1129528161 in words is "one billion, one hundred twenty-nine million, five hundred twenty-eight thousand, one hundred sixty-one".