2041649 has 4 divisors (see below), whose sum is σ = 2161764. Its totient is φ = 1921536.

The previous prime is 2041643. The next prime is 2041661. The reversal of 2041649 is 9461402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9461402 = 2 ⋅4730701.

It can be written as a sum of positive squares in 2 ways, for example, as 753424 + 1288225 = 868^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 2041649 - 2¹⁶ = 1976113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2041643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60032 + ... + 60065.

It is an arithmetic number, because the mean of its divisors is an integer number (540441).

2^2041649 is an apocalyptic number.

It is an amenable number.

2041649 is a deficient number, since it is larger than the sum of its proper divisors (120115).

2041649 is a wasteful number, since it uses less digits than its factorization.

2041649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120114.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2041649 is about 1428.8628345646. The cubic root of 2041649 is about 126.8606776038.

The spelling of 2041649 in words is "two million, forty-one thousand, six hundred forty-nine".