1383543 has 12 divisors (see below), whose sum is σ = 2284048. Its totient is φ = 790560.

The previous prime is 1383521. The next prime is 1383553. The reversal of 1383543 is 3453831.

It is a happy number.

It is not a de Polignac number, because 1383543 - 2⁶ = 1383479 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 (1383553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10918 + ... + 11043.

2^1383543 is an apocalyptic number.

1383543 is a deficient number, since it is larger than the sum of its proper divisors (900505).

1383543 is a wasteful number, since it uses less digits than its factorization.

1383543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21974 (or 21971 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1383543 is about 1176.2410467247. The cubic root of 1383543 is about 111.4288257250.

The spelling of 1383543 in words is "one million, three hundred eighty-three thousand, five hundred forty-three".