2149646759 has 4 divisors (see below), whose sum is σ = 2315004216. Its totient is φ = 1984289304.

The previous prime is 2149646749. The next prime is 2149646761. The reversal of 2149646759 is 9576469412.

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

It is a cyclic number.

It is not a de Polignac number, because 2149646759 - 2⁴ = 2149646743 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 2149646759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149646749) 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, 82678709 + ... + 82678734.

It is an arithmetic number, because the mean of its divisors is an integer number (578751054).

Almost surely, 2^2149646759 is an apocalyptic number.

2149646759 is a deficient number, since it is larger than the sum of its proper divisors (165357457).

2149646759 is a wasteful number, since it uses less digits than its factorization.

2149646759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165357456.

The product of its digits is 3265920, while the sum is 53.

The square root of 2149646759 is about 46364.2832253449. The cubic root of 2149646759 is about 1290.5921922992.

The spelling of 2149646759 in words is "two billion, one hundred forty-nine million, six hundred forty-six thousand, seven hundred fifty-nine".