18120368 has 80 divisors (see below), whose sum is σ = 43997184. Its totient is φ = 7050240.

The previous prime is 18120367. The next prime is 18120373. The reversal of 18120368 is 86302181.

It is a self number, because there is not a number n which added to its sum of digits gives 18120368.

It is not an unprimeable number, because it can be changed into a prime (18120367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58871 + ... + 59177.

Almost surely, 2^18120368 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 18120368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21998592).

18120368 is an abundant number, since it is smaller than the sum of its proper divisors (25876816).

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

18120368 is a wasteful number, since it uses less digits than its factorization.

18120368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 18120368 is about 4256.8025559098. The cubic root of 18120368 is about 262.6570150570.

The spelling of 18120368 in words is "eighteen million, one hundred twenty thousand, three hundred sixty-eight".