2869813 has 2 divisors, whose sum is σ = 2869814. Its totient is φ = 2869812.

The previous prime is 2869807. The next prime is 2869837. The reversal of 2869813 is 3189682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2289169 + 580644 = 1513^2 + 762^2 .

It is a cyclic number.

It is not a de Polignac number, because 2869813 - 2⁵ = 2869781 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2869873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1434906 + 1434907.

It is an arithmetic number, because the mean of its divisors is an integer number (1434907).

2^2869813 is an apocalyptic number.

It is an amenable number.

2869813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2869813 is an equidigital number, since it uses as much as digits as its factorization.

2869813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 2869813 is about 1694.0522424058. The cubic root of 2869813 is about 142.1077836701.

The spelling of 2869813 in words is "two million, eight hundred sixty-nine thousand, eight hundred thirteen".