2193640392 has 32 divisors (see below), whose sum is σ = 5493739680. Its totient is φ = 729928320.

The previous prime is 2193640391. The next prime is 2193640439. The reversal of 2193640392 is 2930463912.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2193640392.

It is not an unprimeable number, because it can be changed into a prime (2193640391) 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 7 ways as a sum of consecutive naturals, for example, 66333 + ... + 93740.

It is an arithmetic number, because the mean of its divisors is an integer number (171679365).

Almost surely, 2^2193640392 is an apocalyptic number.

It is an amenable number.

2193640392 is an abundant number, since it is smaller than the sum of its proper divisors (3300099288).

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

2193640392 is a wasteful number, since it uses less digits than its factorization.

2193640392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160653 (or 160649 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 2193640392 is about 46836.3148849266. The cubic root of 2193640392 is about 1299.3370173693.

The spelling of 2193640392 in words is "two billion, one hundred ninety-three million, six hundred forty thousand, three hundred ninety-two".