2818729 has 2 divisors, whose sum is σ = 2818730. Its totient is φ = 2818728.

The previous prime is 2818687. The next prime is 2818733. The reversal of 2818729 is 9278182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2812329 + 6400 = 1677^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 2818729 - 2¹⁵ = 2785961 is a prime.

It is not a weakly prime, because it can be changed into another prime (2818789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1409364 + 1409365.

It is an arithmetic number, because the mean of its divisors is an integer number (1409365).

2^2818729 is an apocalyptic number.

It is an amenable number.

2818729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2818729 is an equidigital number, since it uses as much as digits as its factorization.

2818729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 37.

The square root of 2818729 is about 1678.9070849812. The cubic root of 2818729 is about 141.2595357334.

The spelling of 2818729 in words is "two million, eight hundred eighteen thousand, seven hundred twenty-nine".