2080381 has 4 divisors (see below), whose sum is σ = 2131164. Its totient is φ = 2029600.

The previous prime is 2080363. The next prime is 2080391. The reversal of 2080381 is 1830802.

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 217156 + 1863225 = 466^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 2080381 - 2⁵ = 2080349 is a prime.

It is a super-2 number, since 2×2080381² = 8655970210322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2080321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25330 + ... + 25411.

It is an arithmetic number, because the mean of its divisors is an integer number (532791).

2^2080381 is an apocalyptic number.

It is an amenable number.

2080381 is a deficient number, since it is larger than the sum of its proper divisors (50783).

2080381 is an equidigital number, since it uses as much as digits as its factorization.

2080381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50782.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 2080381 is about 1442.3525921216. The cubic root of 2080381 is about 127.6578795210.

The spelling of 2080381 in words is "two million, eighty thousand, three hundred eighty-one".