195461664 has 96 divisors (see below), whose sum is σ = 545952960. Its totient is φ = 61056000.

The previous prime is 195461663. The next prime is 195461671. The reversal of 195461664 is 466164591.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (195461663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183694 + ... + 184754.

It is an arithmetic number, because the mean of its divisors is an integer number (5687010).

Almost surely, 2^195461664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195461664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272976480).

195461664 is an abundant number, since it is smaller than the sum of its proper divisors (350491296).

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

195461664 is a wasteful number, since it uses less digits than its factorization.

195461664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194 (or 1186 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 195461664 is about 13980.7604943365. The cubic root of 195461664 is about 580.3462696471.

The spelling of 195461664 in words is "one hundred ninety-five million, four hundred sixty-one thousand, six hundred sixty-four".