1814005 has 4 divisors (see below), whose sum is σ = 2176812. Its totient is φ = 1451200.

The previous prime is 1814003. The next prime is 1814011. The reversal of 1814005 is 5004181.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1350244 + 463761 = 1162^2 + 681^2 .

It is not a de Polignac number, because 1814005 - 2¹ = 1814003 is a prime.

It is a super-2 number, since 2×1814005² = 6581228280050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1814003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181396 + ... + 181405.

It is an arithmetic number, because the mean of its divisors is an integer number (544203).

2^1814005 is an apocalyptic number.

It is an amenable number.

1814005 is a deficient number, since it is larger than the sum of its proper divisors (362807).

1814005 is an equidigital number, since it uses as much as digits as its factorization.

1814005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362806.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1814005 is about 1346.8500287708. The cubic root of 1814005 is about 121.9587112812.

Adding to 1814005 its reverse (5004181), we get a palindrome (6818186).

It can be divided in two parts, 181 and 4005, that added together give a triangular number (4186 = T₉₁).

The spelling of 1814005 in words is "one million, eight hundred fourteen thousand, five".