1649936 has 20 divisors (see below), whose sum is σ = 3231564. Its totient is φ = 816000.

The previous prime is 1649927. The next prime is 1649959. The reversal of 1649936 is 6399461.

It can be written as a sum of positive squares in 2 ways, for example, as 1336336 + 313600 = 1156^2 + 560^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1649936.

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, 1106 + ... + 2126.

2^1649936 is an apocalyptic number.

1649936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1649936 is a deficient number, since it is larger than the sum of its proper divisors (1581628).

1649936 is a wasteful number, since it uses less digits than its factorization.

1649936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1124 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 1649936 is about 1284.4983456587. The cubic root of 1649936 is about 118.1650472167.

The spelling of 1649936 in words is "one million, six hundred forty-nine thousand, nine hundred thirty-six".