18123297210 has 128 divisors (see below), whose sum is σ = 49090579200. Its totient is φ = 4816578816.

The previous prime is 18123297173. The next prime is 18123297223. The reversal of 18123297210 is 1279232181.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7368961 + ... + 7371419.

It is an arithmetic number, because the mean of its divisors is an integer number (383520150).

Almost surely, 2^18123297210 is an apocalyptic number.

18123297210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18123297210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24545289600).

18123297210 is an abundant number, since it is smaller than the sum of its proper divisors (30967281990).

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

18123297210 is an equidigital number, since it uses as much as digits as its factorization.

18123297210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824 (or 2806 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 18123297210 in words is "eighteen billion, one hundred twenty-three million, two hundred ninety-seven thousand, two hundred ten".