195109490944 has 81 divisors (see below), whose sum is σ = 411316472133. Its totient is φ = 92356678656.

The previous prime is 195109490893. The next prime is 195109490951. The reversal of 195109490944 is 449094901591.

The square root of 195109490944 is 441712.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 190305337600 + 4804153344 = 436240^2 + 69312^2 .

It is a super-2 number, since 2×195109490944² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 134279722 + ... + 134281174.

Almost surely, 2^195109490944 is an apocalyptic number.

195109490944 is the 441712-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195109490944

195109490944 is an abundant number, since it is smaller than the sum of its proper divisors (216206981189).

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

195109490944 is an frugal number, since it uses more digits than its factorization.

195109490944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960 (or 1474 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 55.

The spelling of 195109490944 in words is "one hundred ninety-five billion, one hundred nine million, four hundred ninety thousand, nine hundred forty-four".