195412839886 has 16 divisors (see below), whose sum is σ = 319849595568. Its totient is φ = 88800926400.

The previous prime is 195412839877. The next prime is 195412839889. The reversal of 195412839886 is 688938214591.

It is a happy number.

It is a super-2 number, since 2×195412839886² (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 (195412839889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067895 + ... + 1237426.

It is an arithmetic number, because the mean of its divisors is an integer number (19990599723).

Almost surely, 2^195412839886 is an apocalyptic number.

195412839886 is a deficient number, since it is larger than the sum of its proper divisors (124436755682).

195412839886 is a wasteful number, since it uses less digits than its factorization.

195412839886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309187.

The product of its digits is 29859840, while the sum is 64.

The spelling of 195412839886 in words is "one hundred ninety-five billion, four hundred twelve million, eight hundred thirty-nine thousand, eight hundred eighty-six".