6342491509 has 2 divisors, whose sum is σ = 6342491510. Its totient is φ = 6342491508.

The previous prime is 6342491483. The next prime is 6342491513. The reversal of 6342491509 is 9051942436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5129710884 + 1212780625 = 71622^2 + 34825^2 .

It is a cyclic number.

It is not a de Polignac number, because 6342491509 - 2⁷ = 6342491381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6342491539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3171245754 + 3171245755.

It is an arithmetic number, because the mean of its divisors is an integer number (3171245755).

Almost surely, 2^6342491509 is an apocalyptic number.

It is an amenable number.

6342491509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6342491509 is an equidigital number, since it uses as much as digits as its factorization.

6342491509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 6342491509 is about 79639.7608547389. The cubic root of 6342491509 is about 1851.0577354228.

The spelling of 6342491509 in words is "six billion, three hundred forty-two million, four hundred ninety-one thousand, five hundred nine".