2649543916 has 24 divisors (see below), whose sum is σ = 4731506640. Its totient is φ = 1297839552.

The previous prime is 2649543893. The next prime is 2649543947. The reversal of 2649543916 is 6193459462.

It is a self number, because there is not a number n which added to its sum of digits gives 2649543916.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 49990 + ... + 88306.

It is an arithmetic number, because the mean of its divisors is an integer number (197146110).

Almost surely, 2^2649543916 is an apocalyptic number.

It is an amenable number.

2649543916 is a deficient number, since it is larger than the sum of its proper divisors (2081962724).

2649543916 is a wasteful number, since it uses less digits than its factorization.

2649543916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38673 (or 38671 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 49.

The square root of 2649543916 is about 51473.7206349026. The cubic root of 2649543916 is about 1383.7481102112.

The spelling of 2649543916 in words is "two billion, six hundred forty-nine million, five hundred forty-three thousand, nine hundred sixteen".