2183647855849 has 2 divisors, whose sum is σ = 2183647855850. Its totient is φ = 2183647855848.

The previous prime is 2183647855811. The next prime is 2183647855859. The reversal of 2183647855849 is 9485587463812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1538485487449 + 645162368400 = 1240357^2 + 803220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2183647855849 - 2²⁹ = 2183110984937 is a prime.

It is not a weakly prime, because it can be changed into another prime (2183647855859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1091823927924 + 1091823927925.

It is an arithmetic number, because the mean of its divisors is an integer number (1091823927925).

Almost surely, 2^{2183647855849} is an apocalyptic number.

It is an amenable number.

2183647855849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2183647855849 is an equidigital number, since it uses as much as digits as its factorization.

2183647855849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 464486400, while the sum is 70.

The spelling of 2183647855849 in words is "two trillion, one hundred eighty-three billion, six hundred forty-seven million, eight hundred fifty-five thousand, eight hundred forty-nine".