18106500 has 48 divisors (see below), whose sum is σ = 52730496. Its totient is φ = 4828000.

The previous prime is 18106499. The next prime is 18106507. The reversal of 18106500 is 560181.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18106507) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4536 + ... + 7535.

It is an arithmetic number, because the mean of its divisors is an integer number (1098552).

Almost surely, 2^18106500 is an apocalyptic number.

18106500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18106500 is an abundant number, since it is smaller than the sum of its proper divisors (34623996).

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

18106500 is a wasteful number, since it uses less digits than its factorization.

18106500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12093 (or 12081 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 18106500 is about 4255.1733219694. The cubic root of 18106500 is about 262.5899918207.

Adding to 18106500 its reverse (560181), we get a palindrome (18666681).

The spelling of 18106500 in words is "eighteen million, one hundred six thousand, five hundred".