1995943 has 4 divisors (see below), whose sum is σ = 2003328. Its totient is φ = 1988560.

The previous prime is 1995937. The next prime is 1995947. The reversal of 1995943 is 3495991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3495991 = 643 ⋅5437.

It is a cyclic number.

It is not a de Polignac number, because 1995943 - 2⁹ = 1995431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1995896 and 1995905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3271 + ... + 3832.

It is an arithmetic number, because the mean of its divisors is an integer number (500832).

2^1995943 is an apocalyptic number.

1995943 is a deficient number, since it is larger than the sum of its proper divisors (7385).

1995943 is an equidigital number, since it uses as much as digits as its factorization.

1995943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7384.

The product of its digits is 43740, while the sum is 40.

The square root of 1995943 is about 1412.7784681258. The cubic root of 1995943 is about 125.9068556591.

It can be divided in two parts, 19959 and 43, that added together give a palindrome (20002).

The spelling of 1995943 in words is "one million, nine hundred ninety-five thousand, nine hundred forty-three".