18010344 has 64 divisors (see below), whose sum is σ = 52021440. Its totient is φ = 5135360.

The previous prime is 18010339. The next prime is 18010367. The reversal of 18010344 is 44301081.

It is a self number, because there is not a number n which added to its sum of digits gives 18010344.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2482 + ... + 6494.

It is an arithmetic number, because the mean of its divisors is an integer number (812835).

Almost surely, 2^18010344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18010344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26010720).

18010344 is an abundant number, since it is smaller than the sum of its proper divisors (34011096).

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

18010344 is a wasteful number, since it uses less digits than its factorization.

18010344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050 (or 4046 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 18010344 is about 4243.8595641232. The cubic root of 18010344 is about 262.1243315649.

The spelling of 18010344 in words is "eighteen million, ten thousand, three hundred forty-four".