2681742239 has 6 divisors (see below), whose sum is σ = 2947700280. Its totient is φ = 2437947380.

The previous prime is 2681742233. The next prime is 2681742253. The reversal of 2681742239 is 9322471862.

It is a de Polignac number, because none of the positive numbers 2^k-2681742239 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 2681742239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681742233) 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 5 ways as a sum of consecutive naturals, for example, 11081459 + ... + 11081700.

It is an arithmetic number, because the mean of its divisors is an integer number (491283380).

Almost surely, 2^2681742239 is an apocalyptic number.

2681742239 is a deficient number, since it is larger than the sum of its proper divisors (265958041).

2681742239 is a wasteful number, since it uses less digits than its factorization.

2681742239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22163181 (or 22163170 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 2681742239 is about 51785.5408294632. The cubic root of 2681742239 is about 1389.3308441766.

The spelling of 2681742239 in words is "two billion, six hundred eighty-one million, seven hundred forty-two thousand, two hundred thirty-nine".