18898912 has 24 divisors (see below), whose sum is σ = 37384200. Its totient is φ = 9404544.

The previous prime is 18898861. The next prime is 18898921. The reversal of 18898912 is 21989881.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6039 + ... + 8617.

It is an arithmetic number, because the mean of its divisors is an integer number (1557675).

Almost surely, 2^18898912 is an apocalyptic number.

It is an amenable number.

18898912 is a deficient number, since it is larger than the sum of its proper divisors (18485288).

18898912 is a wasteful number, since it uses less digits than its factorization.

18898912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818 (or 2810 counting only the distinct ones).

The product of its digits is 82944, while the sum is 46.

The square root of 18898912 is about 4347.2878901678. The cubic root of 18898912 is about 266.3660891043.

It can be divided in two parts, 1889 and 8912, that added together give a palindrome (10801).

The spelling of 18898912 in words is "eighteen million, eight hundred ninety-eight thousand, nine hundred twelve".