2981557439 has 12 divisors (see below), whose sum is σ = 3475029168. Its totient is φ = 2550693600.

The previous prime is 2981557429. The next prime is 2981557489. The reversal of 2981557439 is 9347551892.

It is not a de Polignac number, because 2981557439 - 2¹² = 2981553343 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 (2981557409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32867 + ... + 83924.

It is an arithmetic number, because the mean of its divisors is an integer number (289585764).

Almost surely, 2^2981557439 is an apocalyptic number.

2981557439 is a deficient number, since it is larger than the sum of its proper divisors (493471729).

2981557439 is a wasteful number, since it uses less digits than its factorization.

2981557439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117326 (or 117319 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 53.

The square root of 2981557439 is about 54603.6394299867. The cubic root of 2981557439 is about 1439.2880738518.

The spelling of 2981557439 in words is "two billion, nine hundred eighty-one million, five hundred fifty-seven thousand, four hundred thirty-nine".