2750187689 has 4 divisors (see below), whose sum is σ = 2824517124. Its totient is φ = 2675858256.

The previous prime is 2750187677. The next prime is 2750187691. The reversal of 2750187689 is 9867810572.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2160669289 + 589518400 = 46483^2 + 24280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2750187689 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 2750187689.

It is not an unprimeable number, because it can be changed into a prime (2750187589) 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, 37164662 + ... + 37164735.

It is an arithmetic number, because the mean of its divisors is an integer number (706129281).

Almost surely, 2^2750187689 is an apocalyptic number.

It is an amenable number.

2750187689 is a deficient number, since it is larger than the sum of its proper divisors (74329435).

2750187689 is an equidigital number, since it uses as much as digits as its factorization.

2750187689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74329434.

The product of its (nonzero) digits is 1693440, while the sum is 53.

The square root of 2750187689 is about 52442.2319223734. The cubic root of 2750187689 is about 1401.0515380547.

The spelling of 2750187689 in words is "two billion, seven hundred fifty million, one hundred eighty-seven thousand, six hundred eighty-nine".