2049645 has 32 divisors (see below), whose sum is σ = 3693312. Its totient is φ = 963072.

The previous prime is 2049643. The next prime is 2049647. The reversal of 2049645 is 5469402.

2049645 = T₃₈₄ + T₃₈₅ + ... + T₄₀₉.

It is an interprime number because it is at equal distance from previous prime (2049643) and next prime (2049647).

It is not a de Polignac number, because 2049645 - 2¹ = 2049643 is a prime.

It is a super-3 number, since 3×2049645³ = 25831950337527033375, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049643) 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 31 ways as a sum of consecutive naturals, for example, 4257 + ... + 4713.

It is an arithmetic number, because the mean of its divisors is an integer number (115416).

2^2049645 is an apocalyptic number.

It is an amenable number.

2049645 is a deficient number, since it is larger than the sum of its proper divisors (1643667).

2049645 is a wasteful number, since it uses less digits than its factorization.

2049645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2049645 is about 1431.6581295826. The cubic root of 2049645 is about 127.0260760311.

The spelling of 2049645 in words is "two million, forty-nine thousand, six hundred forty-five".