195977853 has 32 divisors (see below), whose sum is σ = 318038400. Its totient is φ = 118718208.

The previous prime is 195977851. The next prime is 195977867. The reversal of 195977853 is 358779591.

It is not a de Polignac number, because 195977853 - 2¹ = 195977851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195977853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195977851) 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 31 ways as a sum of consecutive naturals, for example, 5950 + ... + 20672.

It is an arithmetic number, because the mean of its divisors is an integer number (9938700).

Almost surely, 2^195977853 is an apocalyptic number.

It is an amenable number.

195977853 is a deficient number, since it is larger than the sum of its proper divisors (122060547).

195977853 is a wasteful number, since it uses less digits than its factorization.

195977853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14778 (or 14772 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 54.

The square root of 195977853 is about 13999.2090133693. The cubic root of 195977853 is about 580.8566937605.

The spelling of 195977853 in words is "one hundred ninety-five million, nine hundred seventy-seven thousand, eight hundred fifty-three".