18010518 has 32 divisors (see below), whose sum is σ = 39571200. Its totient is φ = 5439456.

The previous prime is 18010501. The next prime is 18010547. The reversal of 18010518 is 81501081.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 813 + ... + 6056.

It is an arithmetic number, because the mean of its divisors is an integer number (1236600).

Almost surely, 2^18010518 is an apocalyptic number.

18010518 is an abundant number, since it is smaller than the sum of its proper divisors (21560682).

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

18010518 is a wasteful number, since it uses less digits than its factorization.

18010518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6916.

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 18010518 is about 4243.8800642808. The cubic root of 18010518 is about 262.1251756999.

Adding to 18010518 its reverse (81501081), we get a palindrome (99511599).

It can be divided in two parts, 18010 and 518, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 18010518 in words is "eighteen million, ten thousand, five hundred eighteen".