16891149 has 16 divisors (see below), whose sum is σ = 26015040. Its totient is φ = 9634560.

The previous prime is 16891117. The next prime is 16891163. The reversal of 16891149 is 94119861.

It is not a de Polignac number, because 16891149 - 2⁵ = 16891117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16891109) 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 15 ways as a sum of consecutive naturals, for example, 14494 + ... + 15615.

It is an arithmetic number, because the mean of its divisors is an integer number (1625940).

Almost surely, 2^16891149 is an apocalyptic number.

It is an amenable number.

16891149 is a deficient number, since it is larger than the sum of its proper divisors (9123891).

16891149 is a wasteful number, since it uses less digits than its factorization.

16891149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30140.

The product of its digits is 15552, while the sum is 39.

The square root of 16891149 is about 4109.8843049410. The cubic root of 16891149 is about 256.5781863643.

The spelling of 16891149 in words is "sixteen million, eight hundred ninety-one thousand, one hundred forty-nine".