1814 has 4 divisors (see below), whose sum is σ = 2724. Its totient is φ = 906.
The previous prime is 1811. The next prime is 1823. The reversal of 1814 is 4181.
Added to its reverse (4181) it gives a triangular number (5995 = T109).
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4181 = 37 ⋅113.
It is an Ulam number.
It is an alternating number because its digits alternate between odd and even.
It is a plaindrome in base 6 and base 11.
It is a nialpdrome in base 13.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1811) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452 + ... + 455.
It is an arithmetic number, because the mean of its divisors is an integer number (681).
1814 is a deficient number, since it is larger than the sum of its proper divisors (910).
1814 is an equidigital number, since it uses as much as digits as its factorization.
1814 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 909.
The product of its digits is 32, while the sum is 14.
The square root of 1814 is about 42.5910788781. The cubic root of 1814 is about 12.1958599228.
Adding to 1814 its reverse (4181), we get a palindrome (5995).
It can be divided in two parts, 18 and 14, that multiplied together give a palindrome (252).
The spelling of 1814 in words is "one thousand, eight hundred fourteen".
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