1649043 has 12 divisors (see below), whose sum is σ = 2598648. Its totient is φ = 999360.

The previous prime is 1649023. The next prime is 1649059. The reversal of 1649043 is 3409461.

It is not a de Polignac number, because 1649043 - 2⁹ = 1648531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1648998 and 1649016.

It is not an unprimeable number, because it can be changed into a prime (1649003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8230 + ... + 8427.

It is an arithmetic number, because the mean of its divisors is an integer number (216554).

2^1649043 is an apocalyptic number.

1649043 is a deficient number, since it is larger than the sum of its proper divisors (949605).

1649043 is a wasteful number, since it uses less digits than its factorization.

1649043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16674 (or 16671 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1649043 is about 1284.1506920919. The cubic root of 1649043 is about 118.1437250907.

The spelling of 1649043 in words is "one million, six hundred forty-nine thousand, forty-three".