1165312330 has 64 divisors (see below), whose sum is σ = 2588382720. Its totient is φ = 367835904.

The previous prime is 1165312301. The next prime is 1165312349. The reversal of 1165312330 is 332135611.

It is a junction number, because it is equal to n+sod(n) for n = 1165312295 and 1165312304.

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 31 ways as a sum of consecutive naturals, for example, 398032 + ... + 400948.

It is an arithmetic number, because the mean of its divisors is an integer number (40443480).

Almost surely, 2^1165312330 is an apocalyptic number.

1165312330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1165312330 is an abundant number, since it is smaller than the sum of its proper divisors (1423070390).

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

1165312330 is a wasteful number, since it uses less digits than its factorization.

1165312330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3383.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1165312330 is about 34136.6713374342. The cubic root of 1165312330 is about 1052.3190858131.

Adding to 1165312330 its reverse (332135611), we get a palindrome (1497447941).

The spelling of 1165312330 in words is "one billion, one hundred sixty-five million, three hundred twelve thousand, three hundred thirty".