18485530 has 32 divisors (see below), whose sum is σ = 38263680. Its totient is φ = 6298560.

The previous prime is 18485503. The next prime is 18485531. The reversal of 18485530 is 3558481.

It is not an unprimeable number, because it can be changed into a prime (18485531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11941 + ... + 13399.

It is an arithmetic number, because the mean of its divisors is an integer number (1195740).

Almost surely, 2^18485530 is an apocalyptic number.

18485530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18485530 is an abundant number, since it is smaller than the sum of its proper divisors (19778150).

18485530 is a wasteful number, since it uses less digits than its factorization.

18485530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 18485530 is about 4299.4802011406. The cubic root of 18485530 is about 264.4096505915.

The spelling of 18485530 in words is "eighteen million, four hundred eighty-five thousand, five hundred thirty".