16116549 has 4 divisors (see below), whose sum is σ = 21488736. Its totient is φ = 10744364.

The previous prime is 16116539. The next prime is 16116563. The reversal of 16116549 is 94561161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94561161 = 3 ⋅31520387.

It is a cyclic number.

It is not a de Polignac number, because 16116549 - 2⁴ = 16116533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16116509) 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, 2686089 + ... + 2686094.

It is an arithmetic number, because the mean of its divisors is an integer number (5372184).

Almost surely, 2^16116549 is an apocalyptic number.

It is an amenable number.

16116549 is a deficient number, since it is larger than the sum of its proper divisors (5372187).

16116549 is an equidigital number, since it uses as much as digits as its factorization.

16116549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372186.

The product of its digits is 6480, while the sum is 33.

The square root of 16116549 is about 4014.5421905866. The cubic root of 16116549 is about 252.5945742514.

The spelling of 16116549 in words is "sixteen million, one hundred sixteen thousand, five hundred forty-nine".