18288118 has 4 divisors (see below), whose sum is σ = 27432180. Its totient is φ = 9144058.

The previous prime is 18288097. The next prime is 18288121. The reversal of 18288118 is 81188281.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4572028 + ... + 4572031.

It is an arithmetic number, because the mean of its divisors is an integer number (6858045).

Almost surely, 2^18288118 is an apocalyptic number.

18288118 is a deficient number, since it is larger than the sum of its proper divisors (9144062).

18288118 is an equidigital number, since it uses as much as digits as its factorization.

18288118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9144061.

The product of its digits is 8192, while the sum is 37.

The square root of 18288118 is about 4276.4609199664. The cubic root of 18288118 is about 263.4650458263.

The spelling of 18288118 in words is "eighteen million, two hundred eighty-eight thousand, one hundred eighteen".