1818484484544 has 2016 divisors, whose sum is σ = 7209349056000. Its totient is φ = 433087119360.

The previous prime is 1818484484539. The next prime is 1818484484587. The reversal of 1818484484544 is 4454844848181.

It is a happy number.

1818484484544 is a `hidden beast` number, since 1 + 8 + 1 + 8 + 4 + 8 + 4 + 4 + 84 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 12204593782 + ... + 12204593930.

It is an arithmetic number, because the mean of its divisors is an integer number (3576066000).

Almost surely, 2^{1818484484544} is an apocalyptic number.

1818484484544 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 1818484484544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3604674528000).

1818484484544 is an abundant number, since it is smaller than the sum of its proper divisors (5390864571456).

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

1818484484544 is a wasteful number, since it uses less digits than its factorization.

1818484484544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 271 counting only the distinct ones).

The product of its digits is 83886080, while the sum is 63.

The spelling of 1818484484544 in words is "one trillion, eight hundred eighteen billion, four hundred eighty-four million, four hundred eighty-four thousand, five hundred forty-four".