1642430959339 has 2 divisors, whose sum is σ = 1642430959340. Its totient is φ = 1642430959338.

The previous prime is 1642430959283. The next prime is 1642430959349. The reversal of 1642430959339 is 9339590342461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1642430959339 - 2²¹ = 1642428862187 is a prime.

It is not a weakly prime, because it can be changed into another prime (1642430959349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821215479669 + 821215479670.

It is an arithmetic number, because the mean of its divisors is an integer number (821215479670).

Almost surely, 2^{1642430959339} is an apocalyptic number.

1642430959339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642430959339 is an equidigital number, since it uses as much as digits as its factorization.

1642430959339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18895680, while the sum is 58.

It can be divided in two parts, 1642430 and 959339, that added together give a square (2601769 = 1613²).

The spelling of 1642430959339 in words is "one trillion, six hundred forty-two billion, four hundred thirty million, nine hundred fifty-nine thousand, three hundred thirty-nine".