1811073771813 has 8 divisors (see below), whose sum is σ = 2414896848000. Its totient is φ = 1207316605088.

The previous prime is 1811073771797. The next prime is 1811073771817. The reversal of 1811073771813 is 3181773701181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1811073771813 - 2⁴ = 1811073771797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1811073771817) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16413213 + ... + 16523186.

It is an arithmetic number, because the mean of its divisors is an integer number (301862106000).

Almost surely, 2^{1811073771813} is an apocalyptic number.

It is an amenable number.

1811073771813 is a deficient number, since it is larger than the sum of its proper divisors (603823076187).

1811073771813 is a wasteful number, since it uses less digits than its factorization.

1811073771813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32954731.

The product of its (nonzero) digits is 197568, while the sum is 48.

The spelling of 1811073771813 in words is "one trillion, eight hundred eleven billion, seventy-three million, seven hundred seventy-one thousand, eight hundred thirteen".