195938172940 has 12 divisors (see below), whose sum is σ = 411470163216. Its totient is φ = 78375269168.

The previous prime is 195938172919. The next prime is 195938173021. The reversal of 195938172940 is 49271839591.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4898454304 + ... + 4898454343.

It is an arithmetic number, because the mean of its divisors is an integer number (34289180268).

Almost surely, 2^195938172940 is an apocalyptic number.

195938172940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195938172940 is an abundant number, since it is smaller than the sum of its proper divisors (215531990276).

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

195938172940 is a wasteful number, since it uses less digits than its factorization.

195938172940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9796908656 (or 9796908654 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 195938172940 in words is "one hundred ninety-five billion, nine hundred thirty-eight million, one hundred seventy-two thousand, nine hundred forty".