1165171284 has 24 divisors (see below), whose sum is σ = 3020814720. Its totient is φ = 388390392.

The previous prime is 1165171229. The next prime is 1165171289. The reversal of 1165171284 is 4821715611.

1165171284 is a `hidden beast` number, since 1 + 16 + 517 + 128 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165171289) 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, 5394204 + ... + 5394419.

It is an arithmetic number, because the mean of its divisors is an integer number (125867280).

Almost surely, 2^1165171284 is an apocalyptic number.

It is an amenable number.

1165171284 is an abundant number, since it is smaller than the sum of its proper divisors (1855643436).

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

1165171284 is a wasteful number, since it uses less digits than its factorization.

1165171284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10788636 (or 10788628 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 1165171284 is about 34134.6053734330. The cubic root of 1165171284 is about 1052.2766275574.

Adding to 1165171284 its reverse (4821715611), we get a palindrome (5986886895).

The spelling of 1165171284 in words is "one billion, one hundred sixty-five million, one hundred seventy-one thousand, two hundred eighty-four".