2054185849 has 2 divisors, whose sum is σ = 2054185850. Its totient is φ = 2054185848.

The previous prime is 2054185843. The next prime is 2054185853. The reversal of 2054185849 is 9485814502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1386221824 + 667964025 = 37232^2 + 25845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2054185849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2054185799 and 2054185808.

It is not a weakly prime, because it can be changed into another prime (2054185843) 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, 1027092924 + 1027092925.

It is an arithmetic number, because the mean of its divisors is an integer number (1027092925).

Almost surely, 2^2054185849 is an apocalyptic number.

It is an amenable number.

2054185849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2054185849 is an equidigital number, since it uses as much as digits as its factorization.

2054185849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 460800, while the sum is 46.

The square root of 2054185849 is about 45323.1270876139. The cubic root of 2054185849 is about 1271.1981271812.

The spelling of 2054185849 in words is "two billion, fifty-four million, one hundred eighty-five thousand, eight hundred forty-nine".