2748777613 has 4 divisors (see below), whose sum is σ = 2749047228. Its totient is φ = 2748508000.

The previous prime is 2748777601. The next prime is 2748777631. The reversal of 2748777613 is 3167778472.

It is a happy number.

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 2621132809 + 127644804 = 51197^2 + 11298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2748777613 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 (2748777653) 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, 118888 + ... + 140113.

It is an arithmetic number, because the mean of its divisors is an integer number (687261807).

Almost surely, 2^2748777613 is an apocalyptic number.

It is an amenable number.

2748777613 is a deficient number, since it is larger than the sum of its proper divisors (269615).

2748777613 is a wasteful number, since it uses less digits than its factorization.

2748777613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269614.

The product of its digits is 2765952, while the sum is 52.

The square root of 2748777613 is about 52428.7861103039. The cubic root of 2748777613 is about 1400.8120481108.

The spelling of 2748777613 in words is "two billion, seven hundred forty-eight million, seven hundred seventy-seven thousand, six hundred thirteen".