195945219642 has 16 divisors (see below), whose sum is σ = 392036209920. Its totient is φ = 65290778112.

The previous prime is 195945219641. The next prime is 195945219653. The reversal of 195945219642 is 246912549591.

It is not an unprimeable number, because it can be changed into a prime (195945219641) 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, 6056298 + ... + 6088565.

It is an arithmetic number, because the mean of its divisors is an integer number (24502263120).

Almost surely, 2^195945219642 is an apocalyptic number.

195945219642 is an abundant number, since it is smaller than the sum of its proper divisors (196090990278).

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

195945219642 is a wasteful number, since it uses less digits than its factorization.

195945219642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12147557.

The product of its digits is 6998400, while the sum is 57.

The spelling of 195945219642 in words is "one hundred ninety-five billion, nine hundred forty-five million, two hundred nineteen thousand, six hundred forty-two".