16108081 has 4 divisors (see below), whose sum is σ = 17572464. Its totient is φ = 14643700.

The previous prime is 16108069. The next prime is 16108091. The reversal of 16108081 is 18080161.

It is a happy number.

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 16108081 - 2¹¹ = 16106033 is a prime.

It is a super-2 number, since 2×16108081² = 518940547005122, which contains 22 as substring.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 732175 + ... + 732196.

It is an arithmetic number, because the mean of its divisors is an integer number (4393116).

Almost surely, 2^16108081 is an apocalyptic number.

16108081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16108081 is a deficient number, since it is larger than the sum of its proper divisors (1464383).

16108081 is a wasteful number, since it uses less digits than its factorization.

16108081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464382.

The product of its (nonzero) digits is 384, while the sum is 25.

The square root of 16108081 is about 4013.4873863013. The cubic root of 16108081 is about 252.5503268635.

It can be divided in two parts, 161080 and 81, that added together give a palindrome (161161).

The spelling of 16108081 in words is "sixteen million, one hundred eight thousand, eighty-one".