2778245859 has 8 divisors (see below), whose sum is σ = 3922229520. Its totient is φ = 1743213056.

The previous prime is 2778245857. The next prime is 2778245903. The reversal of 2778245859 is 9585428772.

2778245859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2778245859 - 2¹ = 2778245857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2778245799 and 2778245808.

It is not an unprimeable number, because it can be changed into a prime (2778245857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27237654 + ... + 27237755.

It is an arithmetic number, because the mean of its divisors is an integer number (490278690).

Almost surely, 2^2778245859 is an apocalyptic number.

2778245859 is a deficient number, since it is larger than the sum of its proper divisors (1143983661).

2778245859 is a wasteful number, since it uses less digits than its factorization.

2778245859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54475429.

The product of its digits is 11289600, while the sum is 57.

The square root of 2778245859 is about 52709.0680907944. The cubic root of 2778245859 is about 1405.8000634001.

The spelling of 2778245859 in words is "two billion, seven hundred seventy-eight million, two hundred forty-five thousand, eight hundred fifty-nine".