2049643 has 2 divisors, whose sum is σ = 2049644. Its totient is φ = 2049642.

The previous prime is 2049629. The next prime is 2049647. The reversal of 2049643 is 3469402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2049643 - 2⁵ = 2049611 is a prime.

2049643 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2049647) 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 as a sum of consecutive naturals, namely, 1024821 + 1024822.

It is an arithmetic number, because the mean of its divisors is an integer number (1024822).

2^2049643 is an apocalyptic number.

2049643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2049643 is an equidigital number, since it uses as much as digits as its factorization.

2049643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2049643 is about 1431.6574310917. The cubic root of 2049643 is about 127.0260347147.

The spelling of 2049643 in words is "two million, forty-nine thousand, six hundred forty-three".