1330344565 has 24 divisors (see below), whose sum is σ = 1838053728. Its totient is φ = 916587360.

The previous prime is 1330344559. The next prime is 1330344581. The reversal of 1330344565 is 5654430331.

It is not a de Polignac number, because 1330344565 - 2³ = 1330344557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1330344565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13647 + ... + 53356.

It is an arithmetic number, because the mean of its divisors is an integer number (76585572).

Almost surely, 2^1330344565 is an apocalyptic number.

It is an amenable number.

1330344565 is a deficient number, since it is larger than the sum of its proper divisors (507709163).

1330344565 is a wasteful number, since it uses less digits than its factorization.

1330344565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67057 (or 67038 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 34.

The square root of 1330344565 is about 36473.8888110385. Note that the first 4 decimals coincide. The cubic root of 1330344565 is about 1099.8194097475.

Adding to 1330344565 its reverse (5654430331), we get a palindrome (6984774896).

The spelling of 1330344565 in words is "one billion, three hundred thirty million, three hundred forty-four thousand, five hundred sixty-five".