2193893 has 4 divisors (see below), whose sum is σ = 2362668. Its totient is φ = 2025120.

The previous prime is 2193889. The next prime is 2193929. The reversal of 2193893 is 3983912.

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 432964 + 1760929 = 658^2 + 1327^2 .

It is a cyclic number.

It is not a de Polignac number, because 2193893 - 2² = 2193889 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 (2193803) 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, 84368 + ... + 84393.

It is an arithmetic number, because the mean of its divisors is an integer number (590667).

2^2193893 is an apocalyptic number.

It is an amenable number.

2193893 is a deficient number, since it is larger than the sum of its proper divisors (168775).

2193893 is a wasteful number, since it uses less digits than its factorization.

2193893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168774.

The product of its digits is 11664, while the sum is 35.

The square root of 2193893 is about 1481.1795974830. The cubic root of 2193893 is about 129.9386890376.

The spelling of 2193893 in words is "two million, one hundred ninety-three thousand, eight hundred ninety-three".