1649049 has 4 divisors (see below), whose sum is σ = 2198736. Its totient is φ = 1099364.

The previous prime is 1649023. The next prime is 1649059. The reversal of 1649049 is 9409461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1649049 - 2⁸ = 1648793 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1649059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274839 + ... + 274844.

It is an arithmetic number, because the mean of its divisors is an integer number (549684).

2^1649049 is an apocalyptic number.

It is an amenable number.

1649049 is a deficient number, since it is larger than the sum of its proper divisors (549687).

1649049 is an equidigital number, since it uses as much as digits as its factorization.

1649049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549686.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1649049 is about 1284.1530282642. The cubic root of 1649049 is about 118.1438683781.

The spelling of 1649049 in words is "one million, six hundred forty-nine thousand, forty-nine".