2639457683 has 2 divisors, whose sum is σ = 2639457684. Its totient is φ = 2639457682.

The previous prime is 2639457677. The next prime is 2639457749. The reversal of 2639457683 is 3867549362.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2639457683 - 2⁶ = 2639457619 is a prime.

It is not a weakly prime, because it can be changed into another prime (2639477683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319728841 + 1319728842.

It is an arithmetic number, because the mean of its divisors is an integer number (1319728842).

Almost surely, 2^2639457683 is an apocalyptic number.

2639457683 is a deficient number, since it is larger than the sum of its proper divisors (1).

2639457683 is an equidigital number, since it uses as much as digits as its factorization.

2639457683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 53.

The square root of 2639457683 is about 51375.6526284582. The cubic root of 2639457683 is about 1381.9900021477.

The spelling of 2639457683 in words is "two billion, six hundred thirty-nine million, four hundred fifty-seven thousand, six hundred eighty-three".