1995305 has 8 divisors (see below), whose sum is σ = 2578632. Its totient is φ = 1473408.

The previous prime is 1995293. The next prime is 1995311. The reversal of 1995305 is 5035991.

It can be written as a sum of positive squares in 4 ways, for example, as 26896 + 1968409 = 164^2 + 1403^2 .

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 1995305 - 2⁴ = 1995289 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15284 + ... + 15413.

It is an arithmetic number, because the mean of its divisors is an integer number (322329).

2^1995305 is an apocalyptic number.

It is an amenable number.

1995305 is a deficient number, since it is larger than the sum of its proper divisors (583327).

1995305 is a wasteful number, since it uses less digits than its factorization.

1995305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30715.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 1995305 is about 1412.5526538859. The cubic root of 1995305 is about 125.8934389208.

The spelling of 1995305 in words is "one million, nine hundred ninety-five thousand, three hundred five".