1806073 has 4 divisors (see below), whose sum is σ = 1809808. Its totient is φ = 1802340.

The previous prime is 1806061. The next prime is 1806089. The reversal of 1806073 is 3706081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3706081 = 31 ⋅119551.

It is a cyclic number.

It is not a de Polignac number, because 1806073 - 2⁵ = 1806041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1806023) 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, 1011 + ... + 2152.

It is an arithmetic number, because the mean of its divisors is an integer number (452452).

2^1806073 is an apocalyptic number.

It is an amenable number.

1806073 is a deficient number, since it is larger than the sum of its proper divisors (3735).

1806073 is an equidigital number, since it uses as much as digits as its factorization.

1806073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1806073 is about 1343.9021541764. The cubic root of 1806073 is about 121.7806908364.

Adding to 1806073 its product of nonzero digits (1008), we get a palindrome (1807081).

The spelling of 1806073 in words is "one million, eight hundred six thousand, seventy-three".