1818121746680 has 64 divisors (see below), whose sum is σ = 4332360219840. Its totient is φ = 684318840832.

The previous prime is 1818121746677. The next prime is 1818121746797. The reversal of 1818121746680 is 866471218181.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2824742 + ... + 3408138.

It is an arithmetic number, because the mean of its divisors is an integer number (67693128435).

Almost surely, 2^{1818121746680} is an apocalyptic number.

1818121746680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1818121746680 is an abundant number, since it is smaller than the sum of its proper divisors (2514238473160).

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

1818121746680 is a wasteful number, since it uses less digits than its factorization.

1818121746680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588008 (or 588004 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 53.

The spelling of 1818121746680 in words is "one trillion, eight hundred eighteen billion, one hundred twenty-one million, seven hundred forty-six thousand, six hundred eighty".