18361088 has 36 divisors (see below), whose sum is σ = 38815560. Its totient is φ = 8638464.

The previous prime is 18361051. The next prime is 18361111. The reversal of 18361088 is 88016381.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2243 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (1078210).

Almost surely, 2^18361088 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 18361088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19407780).

18361088 is an abundant number, since it is smaller than the sum of its proper divisors (20454472).

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

18361088 is an equidigital number, since it uses as much as digits as its factorization.

18361088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252 (or 4238 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 18361088 is about 4284.9840139725. The cubic root of 18361088 is about 263.8149912839.

The spelling of 18361088 in words is "eighteen million, three hundred sixty-one thousand, eighty-eight".