2818081 has 4 divisors (see below), whose sum is σ = 3220672. Its totient is φ = 2415492.

The previous prime is 2818043. The next prime is 2818103. The reversal of 2818081 is 1808182.

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.

It is a cyclic number.

It is not a de Polignac number, because 2818081 - 2¹³ = 2809889 is a prime.

It is a super-2 number, since 2×2818081² = 15883161045122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2818181) 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, 201285 + ... + 201298.

It is an arithmetic number, because the mean of its divisors is an integer number (805168).

2^2818081 is an apocalyptic number.

It is an amenable number.

2818081 is a deficient number, since it is larger than the sum of its proper divisors (402591).

2818081 is an equidigital number, since it uses as much as digits as its factorization.

2818081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402590.

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 2818081 is about 1678.7140912020. The cubic root of 2818081 is about 141.2487101456.

The spelling of 2818081 in words is "two million, eight hundred eighteen thousand, eighty-one".