16109137 has 4 divisors (see below), whose sum is σ = 17573616. Its totient is φ = 14644660.

The previous prime is 16109113. The next prime is 16109143. The reversal of 16109137 is 73190161.

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.

It is a cyclic number.

It is not a de Polignac number, because 16109137 - 2¹⁵ = 16076369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16100137) 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, 732223 + ... + 732244.

It is an arithmetic number, because the mean of its divisors is an integer number (4393404).

Almost surely, 2^16109137 is an apocalyptic number.

It is an amenable number.

16109137 is a deficient number, since it is larger than the sum of its proper divisors (1464479).

16109137 is a wasteful number, since it uses less digits than its factorization.

16109137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464478.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 16109137 is about 4013.6189405573. The cubic root of 16109137 is about 252.5558455701. Note that the first 3 decimals are identical.

Adding to 16109137 its reverse (73190161), we get a palindrome (89299298).

The spelling of 16109137 in words is "sixteen million, one hundred nine thousand, one hundred thirty-seven".