18730500 has 48 divisors (see below), whose sum is σ = 54547584. Its totient is φ = 4994400.

The previous prime is 18730489. The next prime is 18730501. The reversal of 18730500 is 503781.

It is not an unprimeable number, because it can be changed into a prime (18730501) 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 15 ways as a sum of consecutive naturals, for example, 4744 + ... + 7743.

It is an arithmetic number, because the mean of its divisors is an integer number (1136408).

Almost surely, 2^18730500 is an apocalyptic number.

18730500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18730500 is an abundant number, since it is smaller than the sum of its proper divisors (35817084).

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

18730500 is a wasteful number, since it uses less digits than its factorization.

18730500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12509 (or 12497 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 18730500 is about 4327.8747671346. The cubic root of 18730500 is about 265.5725132742.

The spelling of 18730500 in words is "eighteen million, seven hundred thirty thousand, five hundred".