16108891 has 8 divisors (see below), whose sum is σ = 16829280. Its totient is φ = 15399552.

The previous prime is 16108853. The next prime is 16108919. The reversal of 16108891 is 19880161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16108891 - 2¹³ = 16100699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16108091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291 + ... + 5683.

It is an arithmetic number, because the mean of its divisors is an integer number (2103660).

Almost surely, 2^16108891 is an apocalyptic number.

16108891 is a deficient number, since it is larger than the sum of its proper divisors (720389).

16108891 is a wasteful number, since it uses less digits than its factorization.

16108891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525.

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 16108891 is about 4013.5882947806. The cubic root of 16108891 is about 252.5545599839.

It can be divided in two parts, 1610 and 8891, that added together give a palindrome (10501).

The spelling of 16108891 in words is "sixteen million, one hundred eight thousand, eight hundred ninety-one".