16109149 has 12 divisors (see below), whose sum is σ = 19559584. Its totient is φ = 12993984.

The previous prime is 16109143. The next prime is 16109153. The reversal of 16109149 is 94190161.

It is a de Polignac number, because none of the positive numbers 2^k-16109149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16109149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16109143) 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, 1959 + ... + 6004.

Almost surely, 2^16109149 is an apocalyptic number.

It is an amenable number.

16109149 is a deficient number, since it is larger than the sum of its proper divisors (3450435).

16109149 is an equidigital number, since it uses as much as digits as its factorization.

16109149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8004 (or 7987 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 16109149 is about 4013.6204354672. The cubic root of 16109149 is about 252.5559082813. Note that the first 3 decimals are identical.

The spelling of 16109149 in words is "sixteen million, one hundred nine thousand, one hundred forty-nine".