2193733644 has 12 divisors (see below), whose sum is σ = 5118711864. Its totient is φ = 731244544.

The previous prime is 2193733643. The next prime is 2193733649. The reversal of 2193733644 is 4463373912.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2193733596 and 2193733605.

It is not an unprimeable number, because it can be changed into a prime (2193733643) 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 in 3 ways as a sum of consecutive naturals, for example, 91405557 + ... + 91405580.

It is an arithmetic number, because the mean of its divisors is an integer number (426559322).

Almost surely, 2^2193733644 is an apocalyptic number.

It is an amenable number.

2193733644 is an abundant number, since it is smaller than the sum of its proper divisors (2924978220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2193733644 is a wasteful number, since it uses less digits than its factorization.

2193733644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182811144 (or 182811142 counting only the distinct ones).

The product of its digits is 326592, while the sum is 42.

The square root of 2193733644 is about 46837.3103839236. The cubic root of 2193733644 is about 1299.3554287824.

The spelling of 2193733644 in words is "two billion, one hundred ninety-three million, seven hundred thirty-three thousand, six hundred forty-four".