16865049 has 12 divisors (see below), whose sum is σ = 23509136. Its totient is φ = 10753512.

The previous prime is 16865041. The next prime is 16865053. The reversal of 16865049 is 94056861.

It is not a de Polignac number, because 16865049 - 2³ = 16865041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16864998 and 16865016.

It is not an unprimeable number, because it can be changed into a prime (16865041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3727 + ... + 6900.

Almost surely, 2^16865049 is an apocalyptic number.

It is an amenable number.

16865049 is a deficient number, since it is larger than the sum of its proper divisors (6644087).

16865049 is a wasteful number, since it uses less digits than its factorization.

16865049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10676 (or 10653 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 16865049 is about 4106.7078055299. The cubic root of 16865049 is about 256.4459643972.

The spelling of 16865049 in words is "sixteen million, eight hundred sixty-five thousand, forty-nine".