2649782545 has 4 divisors (see below), whose sum is σ = 3179739060. Its totient is φ = 2119826032.

The previous prime is 2649782533. The next prime is 2649782549. The reversal of 2649782545 is 5452879462.

It is a happy number.

2649782545 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.

It can be written as a sum of positive squares in 2 ways, for example, as 957036096 + 1692746449 = 30936^2 + 41143^2 .

It is a cyclic number.

It is not a de Polignac number, because 2649782545 - 2¹⁵ = 2649749777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2649782492 and 2649782501.

It is not an unprimeable number, because it can be changed into a prime (2649782549) 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, 264978250 + ... + 264978259.

It is an arithmetic number, because the mean of its divisors is an integer number (794934765).

Almost surely, 2^2649782545 is an apocalyptic number.

It is an amenable number.

2649782545 is a deficient number, since it is larger than the sum of its proper divisors (529956515).

2649782545 is an equidigital number, since it uses as much as digits as its factorization.

2649782545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529956514.

The product of its digits is 4838400, while the sum is 52.

The square root of 2649782545 is about 51476.0385519321. The cubic root of 2649782545 is about 1383.7896510103.

The spelling of 2649782545 in words is "two billion, six hundred forty-nine million, seven hundred eighty-two thousand, five hundred forty-five".