4166381449 has 2 divisors, whose sum is σ = 4166381450. Its totient is φ = 4166381448.

The previous prime is 4166381407. The next prime is 4166381467. The reversal of 4166381449 is 9441836614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2877571449 + 1288810000 = 53643^2 + 35900^2 .

It is a cyclic number.

It is not a de Polignac number, because 4166381449 - 2⁹ = 4166380937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4166381399 and 4166381408.

It is not a weakly prime, because it can be changed into another prime (4166361449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083190724 + 2083190725.

It is an arithmetic number, because the mean of its divisors is an integer number (2083190725).

Almost surely, 2^4166381449 is an apocalyptic number.

It is an amenable number.

4166381449 is a deficient number, since it is larger than the sum of its proper divisors (1).

4166381449 is an equidigital number, since it uses as much as digits as its factorization.

4166381449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The square root of 4166381449 is about 64547.5131124352. The cubic root of 4166381449 is about 1609.1122568876.

The spelling of 4166381449 in words is "four billion, one hundred sixty-six million, three hundred eighty-one thousand, four hundred forty-nine".