1995807 has 16 divisors (see below), whose sum is σ = 2927232. Its totient is φ = 1199520.

The previous prime is 1995797. The next prime is 1995827. The reversal of 1995807 is 7085991.

It is a happy number.

It is not a de Polignac number, because 1995807 - 2¹¹ = 1993759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995827) 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 15 ways as a sum of consecutive naturals, for example, 6348 + ... + 6654.

It is an arithmetic number, because the mean of its divisors is an integer number (182952).

2^1995807 is an apocalyptic number.

1995807 is a deficient number, since it is larger than the sum of its proper divisors (931425).

1995807 is a wasteful number, since it uses less digits than its factorization.

1995807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 1995807 is about 1412.7303352020. The cubic root of 1995807 is about 125.9039959045.

It can be divided in two parts, 199 and 5807, that added together give a palindrome (6006).

The spelling of 1995807 in words is "one million, nine hundred ninety-five thousand, eight hundred seven".