2639659241 has 6 divisors (see below), whose sum is σ = 2804067390. Its totient is φ = 2484384896.

The previous prime is 2639659129. The next prime is 2639659247. The reversal of 2639659241 is 1429569362.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1691265625 + 948393616 = 41125^2 + 30796^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2639659241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2639659247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4566596 + ... + 4567173.

It is an arithmetic number, because the mean of its divisors is an integer number (467344565).

Almost surely, 2^2639659241 is an apocalyptic number.

It is an amenable number.

2639659241 is a deficient number, since it is larger than the sum of its proper divisors (164408149).

2639659241 is an equidigital number, since it uses as much as digits as its factorization.

2639659241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9133803 (or 9133786 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The square root of 2639659241 is about 51377.6142011285. The cubic root of 2639659241 is about 1382.0251790772.

The spelling of 2639659241 in words is "two billion, six hundred thirty-nine million, six hundred fifty-nine thousand, two hundred forty-one".