2194693 has 4 divisors (see below), whose sum is σ = 2198988. Its totient is φ = 2190400.

The previous prime is 2194679. The next prime is 2194697. The reversal of 2194693 is 3964912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1117249 + 1077444 = 1057^2 + 1038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2194693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258 + ... + 2443.

It is an arithmetic number, because the mean of its divisors is an integer number (549747).

2^2194693 is an apocalyptic number.

It is an amenable number.

2194693 is a deficient number, since it is larger than the sum of its proper divisors (4295).

2194693 is an equidigital number, since it uses as much as digits as its factorization.

2194693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4294.

The product of its digits is 11664, while the sum is 34.

The square root of 2194693 is about 1481.4496278983. The cubic root of 2194693 is about 129.9544811051.

The spelling of 2194693 in words is "two million, one hundred ninety-four thousand, six hundred ninety-three".