18105210704 has 90 divisors (see below), whose sum is σ = 41097963870. Its totient is φ = 7704146688.

The previous prime is 18105210659. The next prime is 18105210709. The reversal of 18105210704 is 40701250181.

It can be written as a sum of positive squares in 3 ways, for example, as 7174090000 + 10931120704 = 84700^2 + 104552^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18105210709) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 61792382 + ... + 61792674.

It is an arithmetic number, because the mean of its divisors is an integer number (456644043).

Almost surely, 2^18105210704 is an apocalyptic number.

18105210704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18105210704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20548981935).

18105210704 is an abundant number, since it is smaller than the sum of its proper divisors (22992753166).

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

18105210704 is an equidigital number, since it uses as much as digits as its factorization.

18105210704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

Adding to 18105210704 its reverse (40701250181), we get a palindrome (58806460885).

The spelling of 18105210704 in words is "eighteen billion, one hundred five million, two hundred ten thousand, seven hundred four".