1393365965 has 16 divisors (see below), whose sum is σ = 1722757296. Its totient is φ = 1081382400.

The previous prime is 1393365949. The next prime is 1393365973. The reversal of 1393365965 is 5695633931.

It can be written as a sum of positive squares in 8 ways, for example, as 434281 + 1392931684 = 659^2 + 37322^2 .

It is not a de Polignac number, because 1393365965 - 2⁴ = 1393365949 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 15 ways as a sum of consecutive naturals, for example, 9026 + ... + 53555.

It is an arithmetic number, because the mean of its divisors is an integer number (107672331).

Almost surely, 2^1393365965 is an apocalyptic number.

It is an amenable number.

1393365965 is a deficient number, since it is larger than the sum of its proper divisors (329391331).

1393365965 is an equidigital number, since it uses as much as digits as its factorization.

1393365965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62720.

The product of its digits is 1968300, while the sum is 50.

The square root of 1393365965 is about 37327.8175761723. The cubic root of 1393365965 is about 1116.9191385272.

The spelling of 1393365965 in words is "one billion, three hundred ninety-three million, three hundred sixty-five thousand, nine hundred sixty-five".