18130534 has 16 divisors (see below), whose sum is σ = 28893888. Its totient is φ = 8502912.

The previous prime is 18130529. The next prime is 18130537. The reversal of 18130534 is 43503181.

It is a junction number, because it is equal to n+sod(n) for n = 18130499 and 18130508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18130537) 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 7 ways as a sum of consecutive naturals, for example, 11752 + ... + 13204.

It is an arithmetic number, because the mean of its divisors is an integer number (1805868).

Almost surely, 2^18130534 is an apocalyptic number.

18130534 is a deficient number, since it is larger than the sum of its proper divisors (10763354).

18130534 is a wasteful number, since it uses less digits than its factorization.

18130534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 18130534 is about 4257.9964772179. The cubic root of 18130534 is about 262.7061250241.

The spelling of 18130534 in words is "eighteen million, one hundred thirty thousand, five hundred thirty-four".