1862438848861 has 2 divisors, whose sum is σ = 1862438848862. Its totient is φ = 1862438848860.

The previous prime is 1862438848847. The next prime is 1862438848993. The reversal of 1862438848861 is 1688488342681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1376560146361 + 485878702500 = 1173269^2 + 697050^2 .

It is a cyclic number.

It is not a de Polignac number, because 1862438848861 - 2⁹ = 1862438848349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1862438848561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931219424430 + 931219424431.

It is an arithmetic number, because the mean of its divisors is an integer number (931219424431).

Almost surely, 2^{1862438848861} is an apocalyptic number.

It is an amenable number.

1862438848861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1862438848861 is an equidigital number, since it uses as much as digits as its factorization.

1862438848861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113246208, while the sum is 67.

The spelling of 1862438848861 in words is "one trillion, eight hundred sixty-two billion, four hundred thirty-eight million, eight hundred forty-eight thousand, eight hundred sixty-one".