195809652 has 36 divisors (see below), whose sum is σ = 501750340. Its totient is φ = 64374912.

The previous prime is 195809651. The next prime is 195809657. The reversal of 195809652 is 256908591.

195809652 is a `hidden beast` number, since 1 + 9 + 580 + 9 + 65 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70459236 + 125350416 = 8394^2 + 11196^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×195809652² = 76682839632722208, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 195809598 and 195809607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195809651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34627 + ... + 39882.

Almost surely, 2^195809652 is an apocalyptic number.

195809652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

195809652 is an abundant number, since it is smaller than the sum of its proper divisors (305940688).

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

195809652 is a wasteful number, since it uses less digits than its factorization.

195809652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74592 (or 74587 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The square root of 195809652 is about 13993.2002058143. The cubic root of 195809652 is about 580.6904698061.

The spelling of 195809652 in words is "one hundred ninety-five million, eight hundred nine thousand, six hundred fifty-two".