6457643039 has 2 divisors, whose sum is σ = 6457643040. Its totient is φ = 6457643038.

The previous prime is 6457643033. The next prime is 6457643051. The reversal of 6457643039 is 9303467546.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6457643039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6457642984 and 6457643002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6457643033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3228821519 + 3228821520.

It is an arithmetic number, because the mean of its divisors is an integer number (3228821520).

Almost surely, 2^6457643039 is an apocalyptic number.

6457643039 is a deficient number, since it is larger than the sum of its proper divisors (1).

6457643039 is an equidigital number, since it uses as much as digits as its factorization.

6457643039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 47.

The square root of 6457643039 is about 80359.4614155670. The cubic root of 6457643039 is about 1862.1929504430.

The spelling of 6457643039 in words is "six billion, four hundred fifty-seven million, six hundred forty-three thousand, thirty-nine".