1165797132 has 12 divisors (see below), whose sum is σ = 2720193336. Its totient is φ = 388599040.

The previous prime is 1165797121. The next prime is 1165797133. The reversal of 1165797132 is 2317975611.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1165797133) 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, 48574869 + ... + 48574892.

It is an arithmetic number, because the mean of its divisors is an integer number (226682778).

Almost surely, 2^1165797132 is an apocalyptic number.

1165797132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1165797132 is an abundant number, since it is smaller than the sum of its proper divisors (1554396204).

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

1165797132 is a wasteful number, since it uses less digits than its factorization.

1165797132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97149768 (or 97149766 counting only the distinct ones).

The product of its digits is 79380, while the sum is 42.

The square root of 1165797132 is about 34143.7714964238. The cubic root of 1165797132 is about 1052.4649968142.

The spelling of 1165797132 in words is "one billion, one hundred sixty-five million, seven hundred ninety-seven thousand, one hundred thirty-two".