1395843965 has 4 divisors (see below), whose sum is σ = 1675012764. Its totient is φ = 1116675168.

The previous prime is 1395843931. The next prime is 1395843971. The reversal of 1395843965 is 5693485931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1102372804 + 293471161 = 33202^2 + 17131^2 .

It is a cyclic number.

It is not a de Polignac number, because 1395843965 - 2⁶ = 1395843901 is a prime.

It is a Duffinian number.

It is a Curzon 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, 139584392 + ... + 139584401.

It is an arithmetic number, because the mean of its divisors is an integer number (418753191).

Almost surely, 2^1395843965 is an apocalyptic number.

It is an amenable number.

1395843965 is a deficient number, since it is larger than the sum of its proper divisors (279168799).

1395843965 is an equidigital number, since it uses as much as digits as its factorization.

1395843965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279168798.

The product of its digits is 3499200, while the sum is 53.

The square root of 1395843965 is about 37360.9952356733. The cubic root of 1395843965 is about 1117.5808662143.

The spelling of 1395843965 in words is "one billion, three hundred ninety-five million, eight hundred forty-three thousand, nine hundred sixty-five".