1820618088833 has 2 divisors, whose sum is σ = 1820618088834. Its totient is φ = 1820618088832.

The previous prime is 1820618088721. The next prime is 1820618088859. The reversal of 1820618088833 is 3388808160281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404526006129 + 416092082704 = 1185127^2 + 645052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1820618088833 is a prime.

It is not a weakly prime, because it can be changed into another prime (1820618088893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910309044416 + 910309044417.

It is an arithmetic number, because the mean of its divisors is an integer number (910309044417).

Almost surely, 2^{1820618088833} is an apocalyptic number.

It is an amenable number.

1820618088833 is a deficient number, since it is larger than the sum of its proper divisors (1).

1820618088833 is an equidigital number, since it uses as much as digits as its factorization.

1820618088833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3538944, while the sum is 56.

The spelling of 1820618088833 in words is "one trillion, eight hundred twenty billion, six hundred eighteen million, eighty-eight thousand, eight hundred thirty-three".