18009110 has 16 divisors (see below), whose sum is σ = 37047456. Its totient is φ = 6174528.

The previous prime is 18009107. The next prime is 18009119. The reversal of 18009110 is 1190081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18009119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128567 + ... + 128706.

It is an arithmetic number, because the mean of its divisors is an integer number (2315466).

Almost surely, 2^18009110 is an apocalyptic number.

18009110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18009110 is an abundant number, since it is smaller than the sum of its proper divisors (19038346).

18009110 is a wasteful number, since it uses less digits than its factorization.

18009110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257287.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 18009110 is about 4243.7141751065. The cubic root of 18009110 is about 262.1183448421.

Adding to 18009110 its reverse (1190081), we get a palindrome (19199191).

The spelling of 18009110 in words is "eighteen million, nine thousand, one hundred ten".