2748757805 has 4 divisors (see below), whose sum is σ = 3298509372. Its totient is φ = 2199006240.

The previous prime is 2748757801. The next prime is 2748757849. The reversal of 2748757805 is 5087578472.

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 1766436841 + 982320964 = 42029^2 + 31342^2 .

It is not a de Polignac number, because 2748757805 - 2² = 2748757801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2748757801) 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 in 3 ways as a sum of consecutive naturals, for example, 274875776 + ... + 274875785.

It is an arithmetic number, because the mean of its divisors is an integer number (824627343).

Almost surely, 2^2748757805 is an apocalyptic number.

It is an amenable number.

2748757805 is a deficient number, since it is larger than the sum of its proper divisors (549751567).

2748757805 is an equidigital number, since it uses as much as digits as its factorization.

2748757805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549751566.

The product of its (nonzero) digits is 4390400, while the sum is 53.

The square root of 2748757805 is about 52428.5972061050. The cubic root of 2748757805 is about 1400.8086832998.

The spelling of 2748757805 in words is "two billion, seven hundred forty-eight million, seven hundred fifty-seven thousand, eight hundred five".