2194613 has 2 divisors, whose sum is σ = 2194614. Its totient is φ = 2194612.

The previous prime is 2194579. The next prime is 2194631. The reversal of 2194613 is 3164912.

Together with next prime (2194631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1787569 + 407044 = 1337^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194613 - 2²⁰ = 1146037 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 (2194663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097306 + 1097307.

It is an arithmetic number, because the mean of its divisors is an integer number (1097307).

2^2194613 is an apocalyptic number.

It is an amenable number.

2194613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194613 is an equidigital number, since it uses as much as digits as its factorization.

2194613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 2194613 is about 1481.4226270717. The cubic root of 2194613 is about 129.9529020710.

Subtracting 2194613 from its reverse (3164912), we obtain a cube (970299 = 99³).

The spelling of 2194613 in words is "two million, one hundred ninety-four thousand, six hundred thirteen".