1812214 has 4 divisors (see below), whose sum is σ = 2718324. Its totient is φ = 906106.

The previous prime is 1812199. The next prime is 1812227. The reversal of 1812214 is 4122181.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1812191 and 1812200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453052 + ... + 453055.

It is an arithmetic number, because the mean of its divisors is an integer number (679581).

2^1812214 is an apocalyptic number.

1812214 is a deficient number, since it is larger than the sum of its proper divisors (906110).

1812214 is an equidigital number, since it uses as much as digits as its factorization.

1812214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906109.

The product of its digits is 128, while the sum is 19.

The square root of 1812214 is about 1346.1849798598. The cubic root of 1812214 is about 121.9185607161.

Adding to 1812214 its reverse (4122181), we get a palindrome (5934395).

The spelling of 1812214 in words is "one million, eight hundred twelve thousand, two hundred fourteen".