2639255741 has 2 divisors, whose sum is σ = 2639255742. Its totient is φ = 2639255740.

The previous prime is 2639255737. The next prime is 2639255747. The reversal of 2639255741 is 1475529362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2358559225 + 280696516 = 48565^2 + 16754^2 .

It is a cyclic number.

It is not a de Polignac number, because 2639255741 - 2² = 2639255737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2639255692 and 2639255701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2639255747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319627870 + 1319627871.

It is an arithmetic number, because the mean of its divisors is an integer number (1319627871).

Almost surely, 2^2639255741 is an apocalyptic number.

It is an amenable number.

2639255741 is a deficient number, since it is larger than the sum of its proper divisors (1).

2639255741 is an equidigital number, since it uses as much as digits as its factorization.

2639255741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 44.

The square root of 2639255741 is about 51373.6872435686. The cubic root of 2639255741 is about 1381.9547564045.

The spelling of 2639255741 in words is "two billion, six hundred thirty-nine million, two hundred fifty-five thousand, seven hundred forty-one".