2194993 has 2 divisors, whose sum is σ = 2194994. Its totient is φ = 2194992.

The previous prime is 2194991. The next prime is 2195003. The reversal of 2194993 is 3994912.

2194993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129969 + 1065024 = 1063^2 + 1032^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194993 - 2¹ = 2194991 is a prime.

Together with 2194991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2194991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097496 + 1097497.

It is an arithmetic number, because the mean of its divisors is an integer number (1097497).

2^2194993 is an apocalyptic number.

It is an amenable number.

2194993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194993 is an equidigital number, since it uses as much as digits as its factorization.

2194993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 2194993 is about 1481.5508766154. The cubic root of 2194993 is about 129.9604021409.

The spelling of 2194993 in words is "two million, one hundred ninety-four thousand, nine hundred ninety-three".