1649044 has 12 divisors (see below), whose sum is σ = 2921184. Its totient is φ = 814424.

The previous prime is 1649023. The next prime is 1649059. The reversal of 1649044 is 4409461.

It is a super-2 number, since 2×1649044² = 5438692227872, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2152 + ... + 2815.

It is an arithmetic number, because the mean of its divisors is an integer number (243432).

2^1649044 is an apocalyptic number.

It is an amenable number.

1649044 is a deficient number, since it is larger than the sum of its proper divisors (1272140).

1649044 is a wasteful number, since it uses less digits than its factorization.

1649044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054 (or 5052 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1649044 is about 1284.1510814542. The cubic root of 1649044 is about 118.1437489719.

The spelling of 1649044 in words is "one million, six hundred forty-nine thousand, forty-four".