1649222 has 16 divisors (see below), whose sum is σ = 2568192. Its totient is φ = 793800.

The previous prime is 1649213. The next prime is 1649237. The reversal of 1649222 is 2229461.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1649191 and 1649200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10847 + ... + 10997.

It is an arithmetic number, because the mean of its divisors is an integer number (160512).

2^1649222 is an apocalyptic number.

1649222 is a deficient number, since it is larger than the sum of its proper divisors (918970).

1649222 is a wasteful number, since it uses less digits than its factorization.

1649222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323.

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

The square root of 1649222 is about 1284.2203860709. The cubic root of 1649222 is about 118.1479996834.

The spelling of 1649222 in words is "one million, six hundred forty-nine thousand, two hundred twenty-two".