1395006565 has 4 divisors (see below), whose sum is σ = 1674007884. Its totient is φ = 1116005248.

The previous prime is 1395006563. The next prime is 1395006593. The reversal of 1395006565 is 5656005931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5656005931 = 13003 ⋅434977.

It can be written as a sum of positive squares in 2 ways, for example, as 602358849 + 792647716 = 24543^2 + 28154^2 .

It is a cyclic number.

It is not a de Polignac number, because 1395006565 - 2¹ = 1395006563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395006563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139500652 + ... + 139500661.

It is an arithmetic number, because the mean of its divisors is an integer number (418501971).

Almost surely, 2^1395006565 is an apocalyptic number.

It is an amenable number.

1395006565 is a deficient number, since it is larger than the sum of its proper divisors (279001319).

1395006565 is an equidigital number, since it uses as much as digits as its factorization.

1395006565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279001318.

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 1395006565 is about 37349.7866794444. The cubic root of 1395006565 is about 1117.3573337250.

The spelling of 1395006565 in words is "one billion, three hundred ninety-five million, six thousand, five hundred sixty-five".