2560739389 has 8 divisors (see below), whose sum is σ = 2775984512. Its totient is φ = 2348103600.

The previous prime is 2560739381. The next prime is 2560739413. The reversal of 2560739389 is 9839370652.

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 2560739389 - 2³ = 2560739381 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 (2560739381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650289 + ... + 654214.

It is an arithmetic number, because the mean of its divisors is an integer number (346998064).

Almost surely, 2^2560739389 is an apocalyptic number.

It is an amenable number.

2560739389 is a deficient number, since it is larger than the sum of its proper divisors (215245123).

2560739389 is a wasteful number, since it uses less digits than its factorization.

2560739389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304667.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The square root of 2560739389 is about 50603.7487642961. The cubic root of 2560739389 is about 1368.1124464769.

The spelling of 2560739389 in words is "two billion, five hundred sixty million, seven hundred thirty-nine thousand, three hundred eighty-nine".