5819781445 has 8 divisors (see below), whose sum is σ = 7394545944. Its totient is φ = 4381953024.

The previous prime is 5819781431. The next prime is 5819781469. The reversal of 5819781445 is 5441879185.

It can be written as a sum of positive squares in 4 ways, for example, as 2075075809 + 3744705636 = 45553^2 + 61194^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5819781445 - 2⁵ = 5819781413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5819781392 and 5819781401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34233924 + ... + 34234093.

It is an arithmetic number, because the mean of its divisors is an integer number (924318243).

Almost surely, 2^5819781445 is an apocalyptic number.

It is an amenable number.

5819781445 is a deficient number, since it is larger than the sum of its proper divisors (1574764499).

5819781445 is a wasteful number, since it uses less digits than its factorization.

5819781445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68468039.

The product of its digits is 1612800, while the sum is 52.

The square root of 5819781445 is about 76287.4920612809. The cubic root of 5819781445 is about 1798.7420681142.

The spelling of 5819781445 in words is "five billion, eight hundred nineteen million, seven hundred eighty-one thousand, four hundred forty-five".