18920260000 has 120 divisors (see below), whose sum is σ = 48571627104. Its totient is φ = 7238880000.

The previous prime is 18920259923. The next prime is 18920260027. The reversal of 18920260000 is 6202981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 439435 + ... + 480565.

Almost surely, 2^18920260000 is an apocalyptic number.

18920260000 is a gapful number since it is divisible by the number (10) 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 18920260000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24285813552).

18920260000 is an abundant number, since it is smaller than the sum of its proper divisors (29651367104).

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

18920260000 is an equidigital number, since it uses as much as digits as its factorization.

18920260000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41184 (or 41161 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

Adding to 18920260000 its reverse (6202981), we get a palindrome (18926462981).

The spelling of 18920260000 in words is "eighteen billion, nine hundred twenty million, two hundred sixty thousand".