18075798 has 48 divisors (see below), whose sum is σ = 43754256. Its totient is φ = 5559840.

The previous prime is 18075791. The next prime is 18075817. The reversal of 18075798 is 89757081.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18075791) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4888 + ... + 7748.

It is an arithmetic number, because the mean of its divisors is an integer number (911547).

Almost surely, 2^18075798 is an apocalyptic number.

18075798 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18075798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21877128).

18075798 is an abundant number, since it is smaller than the sum of its proper divisors (25678458).

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

18075798 is a wasteful number, since it uses less digits than its factorization.

18075798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891 (or 2879 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 18075798 is about 4251.5641827450. The cubic root of 18075798 is about 262.4414889997.

The spelling of 18075798 in words is "eighteen million, seventy-five thousand, seven hundred ninety-eight".