1813743276720 has 160 divisors (see below), whose sum is σ = 5775501415680. Its totient is φ = 470516659200.

The previous prime is 1813743276707. The next prime is 1813743276767. The reversal of 1813743276720 is 276723473181.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 72972295 + ... + 72997145.

It is an arithmetic number, because the mean of its divisors is an integer number (36096883848).

Almost surely, 2^{1813743276720} is an apocalyptic number.

1813743276720 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 1813743276720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2887750707840).

1813743276720 is an abundant number, since it is smaller than the sum of its proper divisors (3961758138960).

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

1813743276720 is a wasteful number, since it uses less digits than its factorization.

1813743276720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33123 (or 33117 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 51.

The spelling of 1813743276720 in words is "one trillion, eight hundred thirteen billion, seven hundred forty-three million, two hundred seventy-six thousand, seven hundred twenty".