1808142064093 has 2 divisors, whose sum is σ = 1808142064094. Its totient is φ = 1808142064092.

The previous prime is 1808142064039. The next prime is 1808142064097. The reversal of 1808142064093 is 3904602418081.

Together with previous prime (1808142064039) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1663166171044 + 144975893049 = 1289638^2 + 380757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1808142064093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1808142064097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904071032046 + 904071032047.

It is an arithmetic number, because the mean of its divisors is an integer number (904071032047).

Almost surely, 2^{1808142064093} is an apocalyptic number.

It is an amenable number.

1808142064093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808142064093 is an equidigital number, since it uses as much as digits as its factorization.

1808142064093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 1808142064093 in words is "one trillion, eight hundred eight billion, one hundred forty-two million, sixty-four thousand, ninety-three".