19450002075709 has 2 divisors, whose sum is σ = 19450002075710. Its totient is φ = 19450002075708.

The previous prime is 19450002075671. The next prime is 19450002075719. The reversal of 19450002075709 is 90757020005491.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11963332028025 + 7486670047684 = 3458805^2 + 2736178^2 .

It is a cyclic number.

It is not a de Polignac number, because 19450002075709 - 2³³ = 19441412141117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19450002075719) 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, 9725001037854 + 9725001037855.

It is an arithmetic number, because the mean of its divisors is an integer number (9725001037855).

Almost surely, 2^{19450002075709} is an apocalyptic number.

It is an amenable number.

19450002075709 is a deficient number, since it is larger than the sum of its proper divisors (1).

19450002075709 is an equidigital number, since it uses as much as digits as its factorization.

19450002075709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793800, while the sum is 49.

The spelling of 19450002075709 in words is "nineteen trillion, four hundred fifty billion, two million, seventy-five thousand, seven hundred nine".