195894488388 has 12 divisors (see below), whose sum is σ = 457087139600. Its totient is φ = 65298162792.

The previous prime is 195894488381. The next prime is 195894488393. The reversal of 195894488388 is 883884498591.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (195894488381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8162270338 + ... + 8162270361.

Almost surely, 2^195894488388 is an apocalyptic number.

It is an amenable number.

195894488388 is an abundant number, since it is smaller than the sum of its proper divisors (261192651212).

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

195894488388 is a wasteful number, since it uses less digits than its factorization.

195894488388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16324540706 (or 16324540704 counting only the distinct ones).

The product of its digits is 637009920, while the sum is 75.

The spelling of 195894488388 in words is "one hundred ninety-five billion, eight hundred ninety-four million, four hundred eighty-eight thousand, three hundred eighty-eight".