2731838545 has 8 divisors (see below), whose sum is σ = 3471042024. Its totient is φ = 2056913664.

The previous prime is 2731838521. The next prime is 2731838567. The reversal of 2731838545 is 5458381372.

It can be written as a sum of positive squares in 4 ways, for example, as 1484406784 + 1247431761 = 38528^2 + 35319^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2731838545 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2731838495 and 2731838504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16069554 + ... + 16069723.

It is an arithmetic number, because the mean of its divisors is an integer number (433880253).

Almost surely, 2^2731838545 is an apocalyptic number.

It is an amenable number.

2731838545 is a deficient number, since it is larger than the sum of its proper divisors (739203479).

2731838545 is a wasteful number, since it uses less digits than its factorization.

2731838545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32139299.

The product of its digits is 806400, while the sum is 46.

The square root of 2731838545 is about 52266.9928826980. The cubic root of 2731838545 is about 1397.9286622515.

The spelling of 2731838545 in words is "two billion, seven hundred thirty-one million, eight hundred thirty-eight thousand, five hundred forty-five".