2649856882 has 4 divisors (see below), whose sum is σ = 3974785326. Its totient is φ = 1324928440.

The previous prime is 2649856873. The next prime is 2649856883. The reversal of 2649856882 is 2886589462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2886589462 = 2 ⋅1443294731.

It can be written as a sum of positive squares in only one way, i.e., 2639801641 + 10055241 = 51379^2 + 3171^2 .

It is not an unprimeable number, because it can be changed into a prime (2649856883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662464219 + ... + 662464222.

Almost surely, 2^2649856882 is an apocalyptic number.

2649856882 is a deficient number, since it is larger than the sum of its proper divisors (1324928444).

2649856882 is a wasteful number, since it uses less digits than its factorization.

2649856882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324928443.

The product of its digits is 13271040, while the sum is 58.

The square root of 2649856882 is about 51476.7606012655. The cubic root of 2649856882 is about 1383.8025911677.

The spelling of 2649856882 in words is "two billion, six hundred forty-nine million, eight hundred fifty-six thousand, eight hundred eighty-two".