1165999116 has 48 divisors (see below), whose sum is σ = 2755057536. Its totient is φ = 383777664.

The previous prime is 1165999097. The next prime is 1165999117. The reversal of 1165999116 is 6119995611.

It is not an unprimeable number, because it can be changed into a prime (1165999117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444240 + ... + 446856.

It is an arithmetic number, because the mean of its divisors is an integer number (57397032).

Almost surely, 2^1165999116 is an apocalyptic number.

It is an amenable number.

1165999116 is an abundant number, since it is smaller than the sum of its proper divisors (1589058420).

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

1165999116 is a wasteful number, since it uses less digits than its factorization.

1165999116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078 (or 3076 counting only the distinct ones).

The product of its digits is 131220, while the sum is 48.

The square root of 1165999116 is about 34146.7292137915. The cubic root of 1165999116 is about 1052.5257760607.

The spelling of 1165999116 in words is "one billion, one hundred sixty-five million, nine hundred ninety-nine thousand, one hundred sixteen".