1866323483136 has 480 divisors, whose sum is σ = 6719854901760. Its totient is φ = 505165787136.

The previous prime is 1866323483099. The next prime is 1866323483243. The reversal of 1866323483136 is 6313843236681.

1866323483136 is a `hidden beast` number, since 1 + 8 + 6 + 6 + 3 + 23 + 483 + 136 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16490935 + ... + 16603721.

It is an arithmetic number, because the mean of its divisors is an integer number (13999697712).

Almost surely, 2^{1866323483136} is an apocalyptic number.

1866323483136 is a gapful number since it is divisible by the number (16) 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 1866323483136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3359927450880).

1866323483136 is an abundant number, since it is smaller than the sum of its proper divisors (4853531418624).

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

1866323483136 is an equidigital number, since it uses as much as digits as its factorization.

1866323483136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112846 (or 112818 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 54.

The spelling of 1866323483136 in words is "one trillion, eight hundred sixty-six billion, three hundred twenty-three million, four hundred eighty-three thousand, one hundred thirty-six".