1165659272 has 32 divisors (see below), whose sum is σ = 2374867200. Its totient is φ = 534340800.

The previous prime is 1165659259. The next prime is 1165659293. The reversal of 1165659272 is 2729565611.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118979 + ... + 128402.

It is an arithmetic number, because the mean of its divisors is an integer number (74214600).

Almost surely, 2^1165659272 is an apocalyptic number.

It is an amenable number.

1165659272 is an abundant number, since it is smaller than the sum of its proper divisors (1209207928).

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

1165659272 is a wasteful number, since it uses less digits than its factorization.

1165659272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247437 (or 247433 counting only the distinct ones).

The product of its digits is 226800, while the sum is 44.

The square root of 1165659272 is about 34141.7526205085. The cubic root of 1165659272 is about 1052.4235091659.

The spelling of 1165659272 in words is "one billion, one hundred sixty-five million, six hundred fifty-nine thousand, two hundred seventy-two".