16549049 has 6 divisors (see below), whose sum is σ = 18190410. Its totient is φ = 15044480.

The previous prime is 16549037. The next prime is 16549051. The reversal of 16549049 is 94094561.

It can be written as a sum of positive squares in only one way, i.e., 8369449 + 8179600 = 2893^2 + 2860^2 .

It is not a de Polignac number, because 16549049 - 2⁴ = 16549033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16549069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68264 + ... + 68505.

It is an arithmetic number, because the mean of its divisors is an integer number (3031735).

Almost surely, 2^16549049 is an apocalyptic number.

It is an amenable number.

16549049 is a deficient number, since it is larger than the sum of its proper divisors (1641361).

16549049 is a wasteful number, since it uses less digits than its factorization.

16549049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136791 (or 136780 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 16549049 is about 4068.0522366361. The cubic root of 16549049 is about 254.8341815728.

The spelling of 16549049 in words is "sixteen million, five hundred forty-nine thousand, forty-nine".