18766098 has 72 divisors (see below), whose sum is σ = 45676800. Its totient is φ = 5559840.

The previous prime is 18766093. The next prime is 18766109. The reversal of 18766098 is 89066781.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18766093) 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 35 ways as a sum of consecutive naturals, for example, 94203 + ... + 94401.

It is an arithmetic number, because the mean of its divisors is an integer number (634400).

Almost surely, 2^18766098 is an apocalyptic number.

18766098 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 18766098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22838400).

18766098 is an abundant number, since it is smaller than the sum of its proper divisors (26910702).

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

18766098 is a wasteful number, since it uses less digits than its factorization.

18766098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 18766098 is about 4331.9854570393. The cubic root of 18766098 is about 265.7406502258.

The spelling of 18766098 in words is "eighteen million, seven hundred sixty-six thousand, ninety-eight".