1646049 has 8 divisors (see below), whose sum is σ = 2202112. Its totient is φ = 1093680.

The previous prime is 1646033. The next prime is 1646101. The reversal of 1646049 is 9406461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1646049 - 2⁴ = 1646033 is a prime.

It is a Duffinian number.

1646049 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1646149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384 + ... + 1854.

It is an arithmetic number, because the mean of its divisors is an integer number (275264).

2^1646049 is an apocalyptic number.

It is an amenable number.

1646049 is a deficient number, since it is larger than the sum of its proper divisors (556063).

1646049 is a wasteful number, since it uses less digits than its factorization.

1646049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1646049 is about 1282.9844114408. The cubic root of 1646049 is about 118.0721812515.

The spelling of 1646049 in words is "one million, six hundred forty-six thousand, forty-nine".