195840445 has 8 divisors (see below), whose sum is σ = 241360344. Its totient is φ = 152437824.

The previous prime is 195840443. The next prime is 195840479. The reversal of 195840445 is 544048591.

It can be written as a sum of positive squares in 4 ways, for example, as 5317636 + 190522809 = 2306^2 + 13803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195840445 - 2¹ = 195840443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195840398 and 195840407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195840443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529114 + ... + 529483.

It is an arithmetic number, because the mean of its divisors is an integer number (30170043).

Almost surely, 2^195840445 is an apocalyptic number.

It is an amenable number.

195840445 is a deficient number, since it is larger than the sum of its proper divisors (45519899).

195840445 is a wasteful number, since it uses less digits than its factorization.

195840445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058639.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 195840445 is about 13994.3004469677. The cubic root of 195840445 is about 580.7209079795.

The spelling of 195840445 in words is "one hundred ninety-five million, eight hundred forty thousand, four hundred forty-five".