2193655920 has 80 divisors (see below), whose sum is σ = 6804897792. Its totient is φ = 584582400.

The previous prime is 2193655901. The next prime is 2193655951. The reversal of 2193655920 is 295563912.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610449 + ... + 614031.

Almost surely, 2^2193655920 is an apocalyptic number.

2193655920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2193655920 is an abundant number, since it is smaller than the sum of its proper divisors (4611241872).

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

2193655920 is a wasteful number, since it uses less digits than its factorization.

2193655920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150 (or 6144 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 2193655920 is about 46836.4806534394. The cubic root of 2193655920 is about 1299.3400832102.

The spelling of 2193655920 in words is "two billion, one hundred ninety-three million, six hundred fifty-five thousand, nine hundred twenty".