2385638649 has 39 divisors (see below), whose sum is σ = 3632662677. Its totient is φ = 1566688068.

The previous prime is 2385638641. The next prime is 2385638701. The reversal of 2385638649 is 9468365832.

The square root of 2385638649 is 48843.

It is a perfect power (a square), and thus also a powerful number.

2385638649 is a `hidden beast` number, since 2 + 38 + 563 + 8 + 6 + 49 = 666.

It is not a de Polignac number, because 2385638649 - 2³ = 2385638641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2385638595 and 2385638604.

It is not an unprimeable number, because it can be changed into a prime (2385638641) by changing a digit.

It is a polite number, since it can be written in 38 ways as a sum of consecutive naturals, for example, 35606514 + ... + 35606580.

Almost surely, 2^2385638649 is an apocalyptic number.

2385638649 is the 48843-rd square number.

2385638649 is the 24422-nd centered octagonal number.

It is an amenable number.

2385638649 is a deficient number, since it is larger than the sum of its proper divisors (1247024028).

2385638649 is an frugal number, since it uses more digits than its factorization.

2385638649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 70 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The cubic root of 2385638649 is about 1336.1900107509.

The spelling of 2385638649 in words is "two billion, three hundred eighty-five million, six hundred thirty-eight thousand, six hundred forty-nine".