2001835 has 16 divisors (see below), whose sum is σ = 2776032. Its totient is φ = 1369600.

The previous prime is 2001833. The next prime is 2001847. The reversal of 2001835 is 5381002.

It is a happy number.

It is not a de Polignac number, because 2001835 - 2¹ = 2001833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001833) 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, 136 + ... + 2005.

It is an arithmetic number, because the mean of its divisors is an integer number (173502).

2^2001835 is an apocalyptic number.

2001835 is a deficient number, since it is larger than the sum of its proper divisors (774197).

2001835 is a wasteful number, since it uses less digits than its factorization.

2001835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2001835 is about 1414.8621841013. The cubic root of 2001835 is about 126.0306257964.

Adding to 2001835 its reverse (5381002), we get a palindrome (7382837).

The spelling of 2001835 in words is "two million, one thousand, eight hundred thirty-five".