2618813 has 2 divisors, whose sum is σ = 2618814. Its totient is φ = 2618812.

The previous prime is 2618807. The next prime is 2618831. The reversal of 2618813 is 3188162.

Together with next prime (2618831) 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., 1592644 + 1026169 = 1262^2 + 1013^2 .

It is a cyclic number.

It is not a de Polignac number, because 2618813 - 2⁴ = 2618797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2618843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1309406 + 1309407.

It is an arithmetic number, because the mean of its divisors is an integer number (1309407).

2^2618813 is an apocalyptic number.

It is an amenable number.

2618813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2618813 is an equidigital number, since it uses as much as digits as its factorization.

2618813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 29.

The square root of 2618813 is about 1618.2746985602. The cubic root of 2618813 is about 137.8377460120.

The spelling of 2618813 in words is "two million, six hundred eighteen thousand, eight hundred thirteen".