3518378849 has 4 divisors (see below), whose sum is σ = 3518510100. Its totient is φ = 3518247600.

The previous prime is 3518378833. The next prime is 3518378863. The reversal of 3518378849 is 9488738153.

3518378849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9488738153 = 211 ⋅44970323.

It can be written as a sum of positive squares in 2 ways, for example, as 2443522624 + 1074856225 = 49432^2 + 32785^2 .

It is a cyclic number.

It is not a de Polignac number, because 3518378849 - 2⁴ = 3518378833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3518378794 and 3518378803.

It is not an unprimeable number, because it can be changed into a prime (3518378819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9302 + ... + 84399.

It is an arithmetic number, because the mean of its divisors is an integer number (879627525).

Almost surely, 2^3518378849 is an apocalyptic number.

It is an amenable number.

3518378849 is a deficient number, since it is larger than the sum of its proper divisors (131251).

3518378849 is an equidigital number, since it uses as much as digits as its factorization.

3518378849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131250.

The product of its digits is 5806080, while the sum is 56.

The square root of 3518378849 is about 59315.9240760860. The cubic root of 3518378849 is about 1520.9474196496.

The spelling of 3518378849 in words is "three billion, five hundred eighteen million, three hundred seventy-eight thousand, eight hundred forty-nine".