18022014 has 40 divisors (see below), whose sum is σ = 41164200. Its totient is φ = 5891184.

The previous prime is 18022007. The next prime is 18022019. The reversal of 18022014 is 41022081.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18022019) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7537 + ... + 9635.

It is an arithmetic number, because the mean of its divisors is an integer number (1029105).

Almost surely, 2^18022014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18022014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20582100).

18022014 is an abundant number, since it is smaller than the sum of its proper divisors (23142186).

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

18022014 is a wasteful number, since it uses less digits than its factorization.

18022014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166 (or 2157 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 18022014 is about 4245.2342691541. The cubic root of 18022014 is about 262.1809347866.

Adding to 18022014 its reverse (41022081), we get a palindrome (59044095).

It can be divided in two parts, 1 and 8022014, that added together give a triangular number (8022015 = T₄₀₀₅).

The spelling of 18022014 in words is "eighteen million, twenty-two thousand, fourteen".