6457090789 has 2 divisors, whose sum is σ = 6457090790. Its totient is φ = 6457090788.

The previous prime is 6457090741. The next prime is 6457090793. The reversal of 6457090789 is 9870907546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5602522500 + 854568289 = 74850^2 + 29233^2 .

It is a cyclic number.

It is not a de Polignac number, because 6457090789 - 2²⁷ = 6322873061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6457000789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3228545394 + 3228545395.

It is an arithmetic number, because the mean of its divisors is an integer number (3228545395).

Almost surely, 2^6457090789 is an apocalyptic number.

It is an amenable number.

6457090789 is a deficient number, since it is larger than the sum of its proper divisors (1).

6457090789 is an equidigital number, since it uses as much as digits as its factorization.

6457090789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The square root of 6457090789 is about 80356.0252190214. The cubic root of 6457090789 is about 1862.1398647496.

The spelling of 6457090789 in words is "six billion, four hundred fifty-seven million, ninety thousand, seven hundred eighty-nine".