195378843 has 16 divisors (see below), whose sum is σ = 299145600. Its totient is φ = 112178880.

The previous prime is 195378839. The next prime is 195378857. The reversal of 195378843 is 348873591.

It is not a de Polignac number, because 195378843 - 2² = 195378839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 195378792 and 195378801.

It is not an unprimeable number, because it can be changed into a prime (195378823) 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, 155178 + ... + 156431.

It is an arithmetic number, because the mean of its divisors is an integer number (18696600).

Almost surely, 2^195378843 is an apocalyptic number.

195378843 is a deficient number, since it is larger than the sum of its proper divisors (103766757).

195378843 is a wasteful number, since it uses less digits than its factorization.

195378843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311642.

The product of its digits is 725760, while the sum is 48.

The square root of 195378843 is about 13977.7982171728. The cubic root of 195378843 is about 580.2642899762.

The spelling of 195378843 in words is "one hundred ninety-five million, three hundred seventy-eight thousand, eight hundred forty-three".