1165041156 has 24 divisors (see below), whose sum is σ = 2723222880. Its totient is φ = 387662272.

The previous prime is 1165041151. The next prime is 1165041173. The reversal of 1165041156 is 6511405611.

It is not an unprimeable number, because it can be changed into a prime (1165041151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78486 + ... + 92141.

It is an arithmetic number, because the mean of its divisors is an integer number (113467620).

Almost surely, 2^1165041156 is an apocalyptic number.

It is an amenable number.

1165041156 is an abundant number, since it is smaller than the sum of its proper divisors (1558181724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165041156 is a wasteful number, since it uses less digits than its factorization.

1165041156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171203 (or 171201 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1165041156 is about 34132.6992193703. The cubic root of 1165041156 is about 1052.2374528447.

Adding to 1165041156 its reverse (6511405611), we get a palindrome (7676446767).

The spelling of 1165041156 in words is "one billion, one hundred sixty-five million, forty-one thousand, one hundred fifty-six".