1806081 has 16 divisors (see below), whose sum is σ = 2528064. Its totient is φ = 1145664.

The previous prime is 1806061. The next prime is 1806089.

1806081 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1806081 - 2⁶ = 1806017 is a prime.

It is a super-2 number, since 2×1806081² = 6523857157122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1806089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5730 + ... + 6036.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

2^1806081 is an apocalyptic number.

It is an amenable number.

1806081 is a deficient number, since it is larger than the sum of its proper divisors (721983).

1806081 is a wasteful number, since it uses less digits than its factorization.

1806081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1806081 is about 1343.9051305803. The cubic root of 1806081 is about 121.7808706453.

The spelling of 1806081 in words is "one million, eight hundred six thousand, eighty-one".