201814 has 4 divisors (see below), whose sum is σ = 302724. Its totient is φ = 100906.

The previous prime is 201809. The next prime is 201821. The reversal of 201814 is 418102.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

201814 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50452 + ... + 50455.

It is an arithmetic number, because the mean of its divisors is an integer number (75681).

2²⁰¹⁸¹⁴ is an apocalyptic number.

201814 is a deficient number, since it is larger than the sum of its proper divisors (100910).

201814 is a wasteful number, since it uses less digits than its factorization.

201814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100909.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 201814 is about 449.2371311457. The cubic root of 201814 is about 58.6566285052.

Adding to 201814 its reverse (418102), we get a palindrome (619916).

The spelling of 201814 in words is "two hundred one thousand, eight hundred fourteen".