18134500 has 24 divisors (see below), whose sum is σ = 39606840. Its totient is φ = 7253600.

The previous prime is 18134491. The next prime is 18134503. The reversal of 18134500 is 543181.

It can be written as a sum of positive squares in 4 ways, for example, as 224676 + 17909824 = 474^2 + 4232^2 .

It is not an unprimeable number, because it can be changed into a prime (18134503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17635 + ... + 18634.

It is an arithmetic number, because the mean of its divisors is an integer number (1650285).

Almost surely, 2^18134500 is an apocalyptic number.

18134500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18134500 is an abundant number, since it is smaller than the sum of its proper divisors (21472340).

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

18134500 is a wasteful number, since it uses less digits than its factorization.

18134500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36288 (or 36276 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 18134500 is about 4258.4621637394. The cubic root of 18134500 is about 262.7252790201.

Adding to 18134500 its reverse (543181), we get a palindrome (18677681).

The spelling of 18134500 in words is "eighteen million, one hundred thirty-four thousand, five hundred".