2740039681 has 8 divisors (see below), whose sum is σ = 2777433984. Its totient is φ = 2702853120.

The previous prime is 2740039667. The next prime is 2740039693. The reversal of 2740039681 is 1869300472.

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

It is a cyclic number.

It is not a de Polignac number, because 2740039681 - 2²³ = 2731651073 is a prime.

It is a super-4 number, since 4×2740039681⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2740039661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25285 + ... + 78226.

It is an arithmetic number, because the mean of its divisors is an integer number (347179248).

Almost surely, 2^2740039681 is an apocalyptic number.

It is an amenable number.

2740039681 is a deficient number, since it is larger than the sum of its proper divisors (37394303).

2740039681 is a wasteful number, since it uses less digits than its factorization.

2740039681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103871.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 2740039681 is about 52345.3883451064. The cubic root of 2740039681 is about 1399.3261520761.

It can be divided in two parts, 27400 and 39681, that added together give a square (67081 = 259²).

The spelling of 2740039681 in words is "two billion, seven hundred forty million, thirty-nine thousand, six hundred eighty-one".