16490109 has 16 divisors (see below), whose sum is σ = 22823424. Its totient is φ = 10579200.

The previous prime is 16490101. The next prime is 16490129. The reversal of 16490109 is 90109461.

It is not a de Polignac number, because 16490109 - 2³ = 16490101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16490101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21289 + ... + 22049.

It is an arithmetic number, because the mean of its divisors is an integer number (1426464).

Almost surely, 2^16490109 is an apocalyptic number.

It is an amenable number.

16490109 is a deficient number, since it is larger than the sum of its proper divisors (6333315).

16490109 is a wasteful number, since it uses less digits than its factorization.

16490109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 16490109 is about 4060.8015218673. The cubic root of 16490109 is about 254.5312881688.

The spelling of 16490109 in words is "sixteen million, four hundred ninety thousand, one hundred nine".