2195868543 has 16 divisors (see below), whose sum is σ = 3237747456. Its totient is φ = 1312597440.

The previous prime is 2195868527. The next prime is 2195868559. The reversal of 2195868543 is 3458685912.

It is an interprime number because it is at equal distance from previous prime (2195868527) and next prime (2195868559).

It is not a de Polignac number, because 2195868543 - 2⁴ = 2195868527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2195868523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453355 + ... + 458172.

It is an arithmetic number, because the mean of its divisors is an integer number (202359216).

Almost surely, 2^2195868543 is an apocalyptic number.

2195868543 is a deficient number, since it is larger than the sum of its proper divisors (1041878913).

2195868543 is a wasteful number, since it uses less digits than its factorization.

2195868543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911614.

The product of its digits is 2073600, while the sum is 51.

The square root of 2195868543 is about 46860.0954224381. The cubic root of 2195868543 is about 1299.7767946175.

The spelling of 2195868543 in words is "two billion, one hundred ninety-five million, eight hundred sixty-eight thousand, five hundred forty-three".