2618081 has 2 divisors, whose sum is σ = 2618082. Its totient is φ = 2618080.

The previous prime is 2618053. The next prime is 2618089. The reversal of 2618081 is 1808162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2560000 + 58081 = 1600^2 + 241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2618081 is a prime.

It is a super-2 number, since 2×2618081² = 13708696245122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2618081.

It is not a weakly prime, because it can be changed into another prime (2618089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1309040 + 1309041.

It is an arithmetic number, because the mean of its divisors is an integer number (1309041).

2^2618081 is an apocalyptic number.

It is an amenable number.

2618081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2618081 is an equidigital number, since it uses as much as digits as its factorization.

2618081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 2618081 is about 1618.0485159599. The cubic root of 2618081 is about 137.8249021992.

The spelling of 2618081 in words is "two million, six hundred eighteen thousand, eighty-one".