2513778068 has 12 divisors (see below), whose sum is σ = 4459373940. Its totient is φ = 1239671232.

The previous prime is 2513778067. The next prime is 2513778073. The reversal of 2513778068 is 8608773152.

It is a happy number.

2513778068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 802135684 + 1711642384 = 28322^2 + 41372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513778061) 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, 4304123 + ... + 4304706.

It is an arithmetic number, because the mean of its divisors is an integer number (371614495).

Almost surely, 2^2513778068 is an apocalyptic number.

It is an amenable number.

2513778068 is a deficient number, since it is larger than the sum of its proper divisors (1945595872).

2513778068 is a wasteful number, since it uses less digits than its factorization.

2513778068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8608906 (or 8608904 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 2513778068 is about 50137.5913661596. The cubic root of 2513778068 is about 1359.6975372647.

The spelling of 2513778068 in words is "two billion, five hundred thirteen million, seven hundred seventy-eight thousand, sixty-eight".