18261480000 has 280 divisors, whose sum is σ = 62337045760. Its totient is φ = 4711680000.

The previous prime is 18261479933. The next prime is 18261480007. The reversal of 18261480000 is 8416281.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 18261480000.

It is not an unprimeable number, because it can be changed into a prime (18261480007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3717546 + ... + 3722454.

Almost surely, 2^18261480000 is an apocalyptic number.

18261480000 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 18261480000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31168522880).

18261480000 is an abundant number, since it is smaller than the sum of its proper divisors (44075565760).

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

18261480000 is an equidigital number, since it uses as much as digits as its factorization.

18261480000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975 (or 4950 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

Adding to 18261480000 its reverse (8416281), we get a palindrome (18269896281).

The spelling of 18261480000 in words is "eighteen billion, two hundred sixty-one million, four hundred eighty thousand".