2193908328 has 40 divisors (see below), whose sum is σ = 6144976530. Its totient is φ = 731302560.

The previous prime is 2193908287. The next prime is 2193908389. The reversal of 2193908328 is 8238093912.

It can be written as a sum of positive squares in only one way, i.e., 1485177444 + 708730884 = 38538^2 + 26622^2 .

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 1692183 + ... + 1693478.

Almost surely, 2^2193908328 is an apocalyptic number.

It is an amenable number.

2193908328 is an abundant number, since it is smaller than the sum of its proper divisors (3951068202).

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

2193908328 is a wasteful number, since it uses less digits than its factorization.

2193908328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3385679 (or 3385666 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2193908328 is about 46839.1751421820. The cubic root of 2193908328 is about 1299.3899164970.

The spelling of 2193908328 in words is "two billion, one hundred ninety-three million, nine hundred eight thousand, three hundred twenty-eight".