1383643 has 4 divisors (see below), whose sum is σ = 1389168. Its totient is φ = 1378120.

The previous prime is 1383607. The next prime is 1383653. The reversal of 1383643 is 3463831.

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

It is a de Polignac number, because none of the positive numbers 2^k-1383643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1383653) 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, 2368 + ... + 2893.

It is an arithmetic number, because the mean of its divisors is an integer number (347292).

2^1383643 is an apocalyptic number.

1383643 is a deficient number, since it is larger than the sum of its proper divisors (5525).

1383643 is an equidigital number, since it uses as much as digits as its factorization.

1383643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524.

The product of its digits is 5184, while the sum is 28.

The square root of 1383643 is about 1176.2835542504. The cubic root of 1383643 is about 111.4315102853.

The spelling of 1383643 in words is "one million, three hundred eighty-three thousand, six hundred forty-three".