2646945682 has 4 divisors (see below), whose sum is σ = 3970418526. Its totient is φ = 1323472840.

The previous prime is 2646945677. The next prime is 2646945703. The reversal of 2646945682 is 2865496462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2466016281 + 180929401 = 49659^2 + 13451^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661736419 + ... + 661736422.

Almost surely, 2^2646945682 is an apocalyptic number.

2646945682 is a deficient number, since it is larger than the sum of its proper divisors (1323472844).

2646945682 is a wasteful number, since it uses less digits than its factorization.

2646945682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323472843.

The product of its digits is 4976640, while the sum is 52.

The square root of 2646945682 is about 51448.4759929777. The cubic root of 2646945682 is about 1383.2956452628.

The spelling of 2646945682 in words is "two billion, six hundred forty-six million, nine hundred forty-five thousand, six hundred eighty-two".