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1383 = 3461

1383 has 4 divisors (see below), whose sum is σ = 1848. Its totient is φ = 920.

The previous prime is 1381. The next prime is 1399. The reversal of 1383 is 3831.

1383 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3831 = 31277.

It is a cyclic number.

It is not a de Polignac number, because 1383 - 21 = 1381 is a prime.

It is a D-number.

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228 + ... + 233.

It is an arithmetic number, because the mean of its divisors is an integer number (462).

1383 is a deficient number, since it is larger than the sum of its proper divisors (465).

1383 is an equidigital number, since it uses as much as digits as its factorization.

1383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464.

The product of its digits is 72, while the sum is 15.

The square root of 1383 is about 37.1887079636. The cubic root of 1383 is about 11.1414246303.

It can be divided in two parts, 138 and 3, that multiplied together give a palindrome (414).

The spelling of 1383 in words is "one thousand, three hundred eighty-three".

Divisors: 1 3 461 1383