494111642389 has 2 divisors, whose sum is σ = 494111642390. Its totient is φ = 494111642388.

The previous prime is 494111642369. The next prime is 494111642449. The reversal of 494111642389 is 983246111494.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484218356164 + 9893286225 = 695858^2 + 99465^2 .

It is a cyclic number.

It is not a de Polignac number, because 494111642389 - 2⁵ = 494111642357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494111642369) 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, 247055821194 + 247055821195.

It is an arithmetic number, because the mean of its divisors is an integer number (247055821195).

Almost surely, 2^494111642389 is an apocalyptic number.

It is an amenable number.

494111642389 is a deficient number, since it is larger than the sum of its proper divisors (1).

494111642389 is an equidigital number, since it uses as much as digits as its factorization.

494111642389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 52.

The spelling of 494111642389 in words is "four hundred ninety-four billion, one hundred eleven million, six hundred forty-two thousand, three hundred eighty-nine".