18869008 has 20 divisors (see below), whose sum is σ = 37159948. Its totient is φ = 9279360.

The previous prime is 18869003. The next prime is 18869017. The reversal of 18869008 is 80096881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8832784 + 10036224 = 2972^2 + 3168^2 .

It is not an unprimeable number, because it can be changed into a prime (18869003) 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, 8691 + ... + 10642.

Almost surely, 2^18869008 is an apocalyptic number.

It is an amenable number.

18869008 is a deficient number, since it is larger than the sum of its proper divisors (18290940).

18869008 is a wasteful number, since it uses less digits than its factorization.

18869008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19402 (or 19396 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 18869008 is about 4343.8471427987. The cubic root of 18869008 is about 266.2255234025.

It can be divided in two parts, 188 and 69008, that added together give a palindrome (69196).

The spelling of 18869008 in words is "eighteen million, eight hundred sixty-nine thousand, eight".