1818464256000 has 2048 divisors, whose sum is σ = 8047907712000. Its totient is φ = 401316249600.

The previous prime is 1818464255977. The next prime is 1818464256001. The reversal of 1818464256000 is 6524648181.

It is a happy number.

1818464256000 is a `hidden beast` number, since 1 + 8 + 1 + 8 + 46 + 42 + 560 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2048).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818464256001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 62705663986 + ... + 62705664014.

Almost surely, 2^{1818464256000} is an apocalyptic number.

1818464256000 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 1818464256000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4023953856000).

1818464256000 is an abundant number, since it is smaller than the sum of its proper divisors (6229443456000).

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

1818464256000 is an frugal number, since it uses more digits than its factorization.

1818464256000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 1818464256000 in words is "one trillion, eight hundred eighteen billion, four hundred sixty-four million, two hundred fifty-six thousand".