1383365 has 4 divisors (see below), whose sum is σ = 1660044. Its totient is φ = 1106688.

The previous prime is 1383359. The next prime is 1383367. The reversal of 1383365 is 5633831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5633831 = 7 ⋅804833.

It can be written as a sum of positive squares in 2 ways, for example, as 247009 + 1136356 = 497^2 + 1066^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383365 - 2⁶ = 1383301 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 (1383367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138332 + ... + 138341.

It is an arithmetic number, because the mean of its divisors is an integer number (415011).

2^1383365 is an apocalyptic number.

It is an amenable number.

1383365 is a deficient number, since it is larger than the sum of its proper divisors (276679).

1383365 is an equidigital number, since it uses as much as digits as its factorization.

1383365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276678.

The product of its digits is 6480, while the sum is 29.

The square root of 1383365 is about 1176.1653795279. The cubic root of 1383365 is about 111.4240468874.

The spelling of 1383365 in words is "one million, three hundred eighty-three thousand, three hundred sixty-five".