1818785614823 has 2 divisors, whose sum is σ = 1818785614824. Its totient is φ = 1818785614822.

The previous prime is 1818785614783. The next prime is 1818785614937. The reversal of 1818785614823 is 3284165878181.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1818785614823 is a prime.

It is a super-2 number, since 2×1818785614823² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1818785619823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909392807411 + 909392807412.

It is an arithmetic number, because the mean of its divisors is an integer number (909392807412).

Almost surely, 2^{1818785614823} is an apocalyptic number.

1818785614823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818785614823 is an equidigital number, since it uses as much as digits as its factorization.

1818785614823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20643840, while the sum is 62.

The spelling of 1818785614823 in words is "one trillion, eight hundred eighteen billion, seven hundred eighty-five million, six hundred fourteen thousand, eight hundred twenty-three".