1818336366816 has 24 divisors (see below), whose sum is σ = 4773132963144. Its totient is φ = 606112122240.

The previous prime is 1818336366787. The next prime is 1818336366827. The reversal of 1818336366816 is 6186636338181.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1818336366816² (a number of 25 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1818336366816.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9470501815 + ... + 9470502006.

It is an arithmetic number, because the mean of its divisors is an integer number (198880540131).

Almost surely, 2^{1818336366816} is an apocalyptic number.

1818336366816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1818336366816 is an abundant number, since it is smaller than the sum of its proper divisors (2954796596328).

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

1818336366816 is a wasteful number, since it uses less digits than its factorization.

1818336366816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18941003834 (or 18941003826 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 60.

The spelling of 1818336366816 in words is "one trillion, eight hundred eighteen billion, three hundred thirty-six million, three hundred sixty-six thousand, eight hundred sixteen".