18114500 has 24 divisors (see below), whose sum is σ = 39563160. Its totient is φ = 7245600.

The previous prime is 18114487. The next prime is 18114511. The reversal of 18114500 is 541181.

It can be written as a sum of positive squares in 4 ways, for example, as 692224 + 17422276 = 832^2 + 4174^2 .

It is a super-2 number, since 2×18114500² = 656270220500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 7 ways as a sum of consecutive naturals, for example, 17615 + ... + 18614.

It is an arithmetic number, because the mean of its divisors is an integer number (1648465).

Almost surely, 2^18114500 is an apocalyptic number.

18114500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18114500 is an abundant number, since it is smaller than the sum of its proper divisors (21448660).

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

18114500 is a wasteful number, since it uses less digits than its factorization.

18114500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36248 (or 36236 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 18114500 is about 4256.1132503729. The cubic root of 18114500 is about 262.6286595298.

Adding to 18114500 its reverse (541181), we get a palindrome (18655681).

The spelling of 18114500 in words is "eighteen million, one hundred fourteen thousand, five hundred".