2749318945 has 8 divisors (see below), whose sum is σ = 3321325800. Its totient is φ = 2184693120.

The previous prime is 2749318933. The next prime is 2749318969. The reversal of 2749318945 is 5498139472.

It can be written as a sum of positive squares in 4 ways, for example, as 34492129 + 2714826816 = 5873^2 + 52104^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2749318945 - 2¹¹ = 2749316897 is a prime.

It is a super-2 number, since 2×2749318945² = 15117509322671826050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2749318892 and 2749318901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1844436 + ... + 1845925.

It is an arithmetic number, because the mean of its divisors is an integer number (415165725).

Almost surely, 2^2749318945 is an apocalyptic number.

It is an amenable number.

2749318945 is a deficient number, since it is larger than the sum of its proper divisors (572006855).

2749318945 is a wasteful number, since it uses less digits than its factorization.

2749318945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690515.

The product of its digits is 2177280, while the sum is 52.

The square root of 2749318945 is about 52433.9484017750. The cubic root of 2749318945 is about 1400.9039986334.

The spelling of 2749318945 in words is "two billion, seven hundred forty-nine million, three hundred eighteen thousand, nine hundred forty-five".