3819518449 has 2 divisors, whose sum is σ = 3819518450. Its totient is φ = 3819518448.

The previous prime is 3819518447. The next prime is 3819518519. The reversal of 3819518449 is 9448159183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3053336049 + 766182400 = 55257^2 + 27680^2 .

It is an emirp because it is prime and its reverse (9448159183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3819518449 - 2¹ = 3819518447 is a prime.

Together with 3819518447, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3819518396 and 3819518405.

It is not a weakly prime, because it can be changed into another prime (3819518447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909759224 + 1909759225.

It is an arithmetic number, because the mean of its divisors is an integer number (1909759225).

Almost surely, 2^3819518449 is an apocalyptic number.

It is an amenable number.

3819518449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3819518449 is an equidigital number, since it uses as much as digits as its factorization.

3819518449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 52.

The square root of 3819518449 is about 61802.2527825645. The cubic root of 3819518449 is about 1563.1579751219.

It can be divided in two parts, 38195 and 18449, that added together give a square (56644 = 238²).

The spelling of 3819518449 in words is "three billion, eight hundred nineteen million, five hundred eighteen thousand, four hundred forty-nine".