195840012 has 24 divisors (see below), whose sum is σ = 464452912. Its totient is φ = 64209600.

The previous prime is 195839999. The next prime is 195840013. The reversal of 195840012 is 210048591.

It is a happy number.

It is a super-3 number, since 3×195840012³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (195840013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133039 + ... + 134502.

Almost surely, 2^195840012 is an apocalyptic number.

195840012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

195840012 is an abundant number, since it is smaller than the sum of its proper divisors (268612900).

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

195840012 is a wasteful number, since it uses less digits than its factorization.

195840012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267609 (or 267607 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 195840012 is about 13994.2849763752. The cubic root of 195840012 is about 580.7204799910.

The spelling of 195840012 in words is "one hundred ninety-five million, eight hundred forty thousand, twelve".