2193368661 has 12 divisors (see below), whose sum is σ = 3456217440. Its totient is φ = 1329314280.

The previous prime is 2193368651. The next prime is 2193368663. The reversal of 2193368661 is 1668633912.

It is not a de Polignac number, because 2193368661 - 2¹⁰ = 2193367637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193368663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11077521 + ... + 11077718.

It is an arithmetic number, because the mean of its divisors is an integer number (288018120).

Almost surely, 2^2193368661 is an apocalyptic number.

It is an amenable number.

2193368661 is a deficient number, since it is larger than the sum of its proper divisors (1262848779).

2193368661 is a wasteful number, since it uses less digits than its factorization.

2193368661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22155256 (or 22155253 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 2193368661 is about 46833.4139370599. The cubic root of 2193368661 is about 1299.2833645877.

The spelling of 2193368661 in words is "two billion, one hundred ninety-three million, three hundred sixty-eight thousand, six hundred sixty-one".