1839781061231 has 2 divisors, whose sum is σ = 1839781061232. Its totient is φ = 1839781061230.

The previous prime is 1839781061197. The next prime is 1839781061267. The reversal of 1839781061231 is 1321601879381.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1839781061231 - 2¹⁴ = 1839781044847 is a prime.

It is a super-2 number, since 2×1839781061231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1839781061231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1839781061291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919890530615 + 919890530616.

It is an arithmetic number, because the mean of its divisors is an integer number (919890530616).

Almost surely, 2^{1839781061231} is an apocalyptic number.

1839781061231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1839781061231 is an equidigital number, since it uses as much as digits as its factorization.

1839781061231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 1839781061231 in words is "one trillion, eight hundred thirty-nine billion, seven hundred eighty-one million, sixty-one thousand, two hundred thirty-one".