1345657065 has 16 divisors (see below), whose sum is σ = 2157773568. Its totient is φ = 716109696.

The previous prime is 1345657063. The next prime is 1345657081. The reversal of 1345657065 is 5607565431.

It is not a de Polignac number, because 1345657065 - 2¹ = 1345657063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1345657063) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 91297 + ... + 105006.

It is an arithmetic number, because the mean of its divisors is an integer number (134860848).

Almost surely, 2^1345657065 is an apocalyptic number.

1345657065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1345657065 is a deficient number, since it is larger than the sum of its proper divisors (812116503).

1345657065 is a wasteful number, since it uses less digits than its factorization.

1345657065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196768.

The product of its (nonzero) digits is 378000, while the sum is 42.

The square root of 1345657065 is about 36683.1986745976. The cubic root of 1345657065 is about 1104.0230276060.

The spelling of 1345657065 in words is "one billion, three hundred forty-five million, six hundred fifty-seven thousand, sixty-five".