18051102 has 48 divisors (see below), whose sum is σ = 42082560. Its totient is φ = 5574096.

The previous prime is 18051101. The next prime is 18051107. The reversal of 18051102 is 20115081.

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 (18051101) 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 23 ways as a sum of consecutive naturals, for example, 15513 + ... + 16635.

It is an arithmetic number, because the mean of its divisors is an integer number (876720).

Almost surely, 2^18051102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18051102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21041280).

18051102 is an abundant number, since it is smaller than the sum of its proper divisors (24031458).

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

18051102 is a wasteful number, since it uses less digits than its factorization.

18051102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 18051102 is about 4248.6588472128. The cubic root of 18051102 is about 262.3219145847.

Adding to 18051102 its reverse (20115081), we get a palindrome (38166183).

The spelling of 18051102 in words is "eighteen million, fifty-one thousand, one hundred two".