18169008 has 80 divisors (see below), whose sum is σ = 55163136. Its totient is φ = 5080320.

The previous prime is 18169003. The next prime is 18169009. The reversal of 18169008 is 80096181.

It is a super-2 number, since 2×18169008² = 660225703408128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 18169008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18169003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5541 + ... + 8187.

Almost surely, 2^18169008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18169008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27581568).

18169008 is an abundant number, since it is smaller than the sum of its proper divisors (36994128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18169008 is a wasteful number, since it uses less digits than its factorization.

18169008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682 (or 2676 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 18169008 is about 4262.5119354672. The cubic root of 18169008 is about 262.8918193968.

The spelling of 18169008 in words is "eighteen million, one hundred sixty-nine thousand, eight".