195194394168 has 32 divisors (see below), whose sum is σ = 488001066000. Its totient is φ = 65062787328.

The previous prime is 195194394137. The next prime is 195194394169. The reversal of 195194394168 is 861493491591.

It is a super-2 number, since 2×195194394168² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195194394169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808980 + ... + 1022172.

Almost surely, 2^195194394168 is an apocalyptic number.

It is an amenable number.

195194394168 is an abundant number, since it is smaller than the sum of its proper divisors (292806671832).

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

195194394168 is a wasteful number, since it uses less digits than its factorization.

195194394168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251351 (or 251347 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 60.

The spelling of 195194394168 in words is "one hundred ninety-five billion, one hundred ninety-four million, three hundred ninety-four thousand, one hundred sixty-eight".