1820414 has 4 divisors (see below), whose sum is σ = 2730624. Its totient is φ = 910206.

The previous prime is 1820407. The next prime is 1820419. The reversal of 1820414 is 4140281.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455102 + ... + 455105.

It is an arithmetic number, because the mean of its divisors is an integer number (682656).

2^1820414 is an apocalyptic number.

1820414 is a deficient number, since it is larger than the sum of its proper divisors (910210).

1820414 is an equidigital number, since it uses as much as digits as its factorization.

1820414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910209.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1820414 is about 1349.2271862070. The cubic root of 1820414 is about 122.1021718675.

Adding to 1820414 its reverse (4140281), we get a palindrome (5960695).

The spelling of 1820414 in words is "one million, eight hundred twenty thousand, four hundred fourteen".