2527738649 has 4 divisors (see below), whose sum is σ = 2528802660. Its totient is φ = 2526674640.

The previous prime is 2527738643. The next prime is 2527738651. The reversal of 2527738649 is 9468377252.

2527738649 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 1234257424 + 1293481225 = 35132^2 + 35965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2527738649 - 2¹² = 2527734553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2527738649.

It is not an unprimeable number, because it can be changed into a prime (2527738643) 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, 528434 + ... + 533195.

It is an arithmetic number, because the mean of its divisors is an integer number (632200665).

Almost surely, 2^2527738649 is an apocalyptic number.

It is an amenable number.

2527738649 is a deficient number, since it is larger than the sum of its proper divisors (1064011).

2527738649 is a wasteful number, since it uses less digits than its factorization.

2527738649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064010.

The product of its digits is 5080320, while the sum is 53.

The square root of 2527738649 is about 50276.6212965828. The cubic root of 2527738649 is about 1362.2099754041.

The spelling of 2527738649 in words is "two billion, five hundred twenty-seven million, seven hundred thirty-eight thousand, six hundred forty-nine".