1395577565 has 4 divisors (see below), whose sum is σ = 1674693084. Its totient is φ = 1116462048.

The previous prime is 1395577559. The next prime is 1395577571. The reversal of 1395577565 is 5657755931.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1395577559) and next prime (1395577571).

It can be written as a sum of positive squares in 2 ways, for example, as 1041159289 + 354418276 = 32267^2 + 18826^2 .

It is a cyclic number.

It is not a de Polignac number, because 1395577565 - 2³⁰ = 321835741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139557752 + ... + 139557761.

It is an arithmetic number, because the mean of its divisors is an integer number (418673271).

Almost surely, 2^1395577565 is an apocalyptic number.

It is an amenable number.

1395577565 is a deficient number, since it is larger than the sum of its proper divisors (279115519).

1395577565 is an equidigital number, since it uses as much as digits as its factorization.

1395577565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279115518.

The product of its digits is 4961250, while the sum is 53.

The square root of 1395577565 is about 37357.4298500312. The cubic root of 1395577565 is about 1117.5097640728.

The spelling of 1395577565 in words is "one billion, three hundred ninety-five million, five hundred seventy-seven thousand, five hundred sixty-five".