18190116 has 48 divisors (see below), whose sum is σ = 53898880. Its totient is φ = 5196960.

The previous prime is 18190103. The next prime is 18190121. The reversal of 18190116 is 61109181.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 18190116.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11275 + ... + 12786.

Almost surely, 2^18190116 is an apocalyptic number.

It is an amenable number.

18190116 is an abundant number, since it is smaller than the sum of its proper divisors (35708764).

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

18190116 is a wasteful number, since it uses less digits than its factorization.

18190116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24081 (or 24073 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The square root of 18190116 is about 4264.9872215518. The cubic root of 18190116 is about 262.9935856021.

Adding to 18190116 its reverse (61109181), we get a palindrome (79299297).

The spelling of 18190116 in words is "eighteen million, one hundred ninety thousand, one hundred sixteen".