1995845 has 8 divisors (see below), whose sum is σ = 2450976. Its totient is φ = 1559376.

The previous prime is 1995841. The next prime is 1995857. The reversal of 1995845 is 5485991.

It is a happy number.

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 1995845 - 2² = 1995841 is a prime.

It is a d-powerful number, because it can be written as 1 + 9 + 9⁴ + 5⁵ + 8⁵ + 4⁴ + 5⁹ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995841) by changing a digit.

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, 4427 + ... + 4856.

It is an arithmetic number, because the mean of its divisors is an integer number (306372).

2^1995845 is an apocalyptic number.

It is an amenable number.

1995845 is a deficient number, since it is larger than the sum of its proper divisors (455131).

1995845 is an equidigital number, since it uses as much as digits as its factorization.

1995845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9331.

The product of its digits is 64800, while the sum is 41.

The square root of 1995845 is about 1412.7437842723. The cubic root of 1995845 is about 125.9047949666.

The spelling of 1995845 in words is "one million, nine hundred ninety-five thousand, eight hundred forty-five".