4186838449 has 2 divisors, whose sum is σ = 4186838450. Its totient is φ = 4186838448.

The previous prime is 4186838407. The next prime is 4186838479. The reversal of 4186838449 is 9448386814.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2689148449 + 1497690000 = 51857^2 + 38700^2 .

It is a cyclic number.

It is not a de Polignac number, because 4186838449 - 2⁹ = 4186837937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4186838449.

It is not a weakly prime, because it can be changed into another prime (4186838479) 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, 2093419224 + 2093419225.

It is an arithmetic number, because the mean of its divisors is an integer number (2093419225).

Almost surely, 2^4186838449 is an apocalyptic number.

It is an amenable number.

4186838449 is a deficient number, since it is larger than the sum of its proper divisors (1).

4186838449 is an equidigital number, since it uses as much as digits as its factorization.

4186838449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5308416, while the sum is 55.

The square root of 4186838449 is about 64705.7837368500. The cubic root of 4186838449 is about 1611.7415473156.

The spelling of 4186838449 in words is "four billion, one hundred eighty-six million, eight hundred thirty-eight thousand, four hundred forty-nine".