2195868544 has 32 divisors (see below), whose sum is σ = 4380524640. Its totient is φ = 1096442880.

The previous prime is 2195868527. The next prime is 2195868559. The reversal of 2195868544 is 4458685912.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 2195868491 and 2195868500.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 86137 + ... + 108679.

It is an arithmetic number, because the mean of its divisors is an integer number (136891395).

Almost surely, 2^2195868544 is an apocalyptic number.

It is an amenable number.

2195868544 is a deficient number, since it is larger than the sum of its proper divisors (2184656096).

2195868544 is an equidigital number, since it uses as much as digits as its factorization.

2195868544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23318 (or 23306 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 52.

The square root of 2195868544 is about 46860.0954331081. The cubic root of 2195868544 is about 1299.7767948148.

The spelling of 2195868544 in words is "two billion, one hundred ninety-five million, eight hundred sixty-eight thousand, five hundred forty-four".