2001849 has 4 divisors (see below), whose sum is σ = 2669136. Its totient is φ = 1334564.

The previous prime is 2001847. The next prime is 2001911. The reversal of 2001849 is 9481002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2001849 - 2¹ = 2001847 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2001847) 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, 333639 + ... + 333644.

It is an arithmetic number, because the mean of its divisors is an integer number (667284).

2^2001849 is an apocalyptic number.

It is an amenable number.

2001849 is a deficient number, since it is larger than the sum of its proper divisors (667287).

2001849 is an equidigital number, since it uses as much as digits as its factorization.

2001849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667286.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 2001849 is about 1414.8671315710. The cubic root of 2001849 is about 126.0309195976.

It can be divided in two parts, 2001 and 849, that added together give a triangular number (2850 = T₇₅).

The spelling of 2001849 in words is "two million, one thousand, eight hundred forty-nine".