1818826682400 has 1440 divisors, whose sum is σ = 8363801432448. Its totient is φ = 374342860800.

The previous prime is 1818826682383. The next prime is 1818826682443. The reversal of 1818826682400 is 42866288181.

1818826682400 is a `hidden beast` number, since 1 + 81 + 8 + 82 + 6 + 6 + 82 + 400 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a super-2 number, since 2×1818826682400² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 241765039 + ... + 241772561.

Almost surely, 2^{1818826682400} is an apocalyptic number.

1818826682400 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 1818826682400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4181900716224).

1818826682400 is an abundant number, since it is smaller than the sum of its proper divisors (6544974750048).

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

1818826682400 is a wasteful number, since it uses less digits than its factorization.

1818826682400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616 (or 7594 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 54.

The spelling of 1818826682400 in words is "one trillion, eight hundred eighteen billion, eight hundred twenty-six million, six hundred eighty-two thousand, four hundred".