1818097736832 has 640 divisors, whose sum is σ = 6382564095600. Its totient is φ = 508333916160.

The previous prime is 1818097736771. The next prime is 1818097736843. The reversal of 1818097736832 is 2386377908181.

1818097736832 is a `hidden beast` number, since 1 + 8 + 180 + 97 + 7 + 368 + 3 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 942406042176 + 875691694656 = 970776^2 + 935784^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1818097736832.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 66434832 + ... + 66462192.

Almost surely, 2^{1818097736832} is an apocalyptic number.

1818097736832 is a gapful number since it is divisible by the number (12) 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 1818097736832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3191282047800).

1818097736832 is an abundant number, since it is smaller than the sum of its proper divisors (4564466358768).

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

1818097736832 is a wasteful number, since it uses less digits than its factorization.

1818097736832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27446 (or 27425 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 1818097736832 in words is "one trillion, eight hundred eighteen billion, ninety-seven million, seven hundred thirty-six thousand, eight hundred thirty-two".