2818609 has 2 divisors, whose sum is σ = 2818610. Its totient is φ = 2818608.

The previous prime is 2818577. The next prime is 2818619. The reversal of 2818609 is 9068182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2241009 + 577600 = 1497^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 2818609 - 2⁵ = 2818577 is a prime.

2818609 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2818619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1409304 + 1409305.

It is an arithmetic number, because the mean of its divisors is an integer number (1409305).

2^2818609 is an apocalyptic number.

It is an amenable number.

2818609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2818609 is an equidigital number, since it uses as much as digits as its factorization.

2818609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2818609 is about 1678.8713470662. The cubic root of 2818609 is about 141.2575311201.

The spelling of 2818609 in words is "two million, eight hundred eighteen thousand, six hundred nine".