18190080000 has 360 divisors, whose sum is σ = 65690925300. Its totient is φ = 4847616000.

The previous prime is 18190079981. The next prime is 18190080001. The reversal of 18190080000 is 8009181.

It is a tau number, because it is divible by the number of its divisors (360).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18190080001) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 11519211 + ... + 11520789.

Almost surely, 2^18190080000 is an apocalyptic number.

18190080000 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 18190080000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32845462650).

18190080000 is an abundant number, since it is smaller than the sum of its proper divisors (47500845300).

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

18190080000 is an equidigital number, since it uses as much as digits as its factorization.

18190080000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

Adding to 18190080000 its reverse (8009181), we get a palindrome (18198089181).

The spelling of 18190080000 in words is "eighteen billion, one hundred ninety million, eighty thousand".