1330730865 has 24 divisors (see below), whose sum is σ = 2307488040. Its totient is φ = 709449984.

The previous prime is 1330730861. The next prime is 1330730867. The reversal of 1330730865 is 5680370331.

It can be written as a sum of positive squares in 4 ways, for example, as 631868769 + 698862096 = 25137^2 + 26436^2 .

It is not a de Polignac number, because 1330730865 - 2² = 1330730861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1330730861) 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 23 ways as a sum of consecutive naturals, for example, 176901 + ... + 184269.

It is an arithmetic number, because the mean of its divisors is an integer number (96145335).

Almost surely, 2^1330730865 is an apocalyptic number.

1330730865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1330730865 is a deficient number, since it is larger than the sum of its proper divisors (976757175).

1330730865 is a wasteful number, since it uses less digits than its factorization.

1330730865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11393 (or 11390 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 1330730865 is about 36479.1839958078. The cubic root of 1330730865 is about 1099.9258531289.

The spelling of 1330730865 in words is "one billion, three hundred thirty million, seven hundred thirty thousand, eight hundred sixty-five".