1839781344133 has 2 divisors, whose sum is σ = 1839781344134. Its totient is φ = 1839781344132.

The previous prime is 1839781344073. The next prime is 1839781344139. The reversal of 1839781344133 is 3314431879381.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1806424705089 + 33356639044 = 1344033^2 + 182638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1839781344133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1839781344139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919890672066 + 919890672067.

It is an arithmetic number, because the mean of its divisors is an integer number (919890672067).

Almost surely, 2^{1839781344133} is an apocalyptic number.

It is an amenable number.

1839781344133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1839781344133 is an equidigital number, since it uses as much as digits as its factorization.

1839781344133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 55.

The spelling of 1839781344133 in words is "one trillion, eight hundred thirty-nine billion, seven hundred eighty-one million, three hundred forty-four thousand, one hundred thirty-three".