2849813 has 2 divisors, whose sum is σ = 2849814. Its totient is φ = 2849812.

The previous prime is 2849809. The next prime is 2849831. The reversal of 2849813 is 3189482.

It is a happy number.

Together with next prime (2849831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2845969 + 3844 = 1687^2 + 62^2 .

It is a cyclic number.

It is not a de Polignac number, because 2849813 - 2² = 2849809 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2849843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1424906 + 1424907.

It is an arithmetic number, because the mean of its divisors is an integer number (1424907).

2^2849813 is an apocalyptic number.

It is an amenable number.

2849813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2849813 is an equidigital number, since it uses as much as digits as its factorization.

2849813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 2849813 is about 1688.1389160848. The cubic root of 2849813 is about 141.7768929148.

The spelling of 2849813 in words is "two million, eight hundred forty-nine thousand, eight hundred thirteen".