1330640765 has 16 divisors (see below), whose sum is σ = 1613908800. Its totient is φ = 1053114240.

The previous prime is 1330640743. The next prime is 1330640767. The reversal of 1330640765 is 5670460331.

It is a de Polignac number, because none of the positive numbers 2^k-1330640765 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330640767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 560030 + ... + 562400.

It is an arithmetic number, because the mean of its divisors is an integer number (100869300).

Almost surely, 2^1330640765 is an apocalyptic number.

It is an amenable number.

1330640765 is a deficient number, since it is larger than the sum of its proper divisors (283268035).

1330640765 is a wasteful number, since it uses less digits than its factorization.

1330640765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 1330640765 is about 36477.9490240337. The cubic root of 1330640765 is about 1099.9010282854.

The spelling of 1330640765 in words is "one billion, three hundred thirty million, six hundred forty thousand, seven hundred sixty-five".