2640314839 has 2 divisors, whose sum is σ = 2640314840. Its totient is φ = 2640314838.

The previous prime is 2640314837. The next prime is 2640314903. The reversal of 2640314839 is 9384130462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2640314839 - 2¹ = 2640314837 is a prime.

Together with 2640314837, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2640314837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320157419 + 1320157420.

It is an arithmetic number, because the mean of its divisors is an integer number (1320157420).

Almost surely, 2^2640314839 is an apocalyptic number.

2640314839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640314839 is an equidigital number, since it uses as much as digits as its factorization.

2640314839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 2640314839 is about 51383.9939961852. The cubic root of 2640314839 is about 1382.1395849986.

The spelling of 2640314839 in words is "two billion, six hundred forty million, three hundred fourteen thousand, eight hundred thirty-nine".