19380145073 has 2 divisors, whose sum is σ = 19380145074. Its totient is φ = 19380145072.

The previous prime is 19380145063. The next prime is 19380145151. The reversal of 19380145073 is 37054108391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18716155249 + 663989824 = 136807^2 + 25768^2 .

It is a cyclic number.

It is not a de Polignac number, because 19380145073 - 2²⁶ = 19313036209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19380145073.

It is not a weakly prime, because it can be changed into another prime (19380145003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9690072536 + 9690072537.

It is an arithmetic number, because the mean of its divisors is an integer number (9690072537).

Almost surely, 2^19380145073 is an apocalyptic number.

It is an amenable number.

19380145073 is a deficient number, since it is larger than the sum of its proper divisors (1).

19380145073 is an equidigital number, since it uses as much as digits as its factorization.

19380145073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 19380145073 in words is "nineteen billion, three hundred eighty million, one hundred forty-five thousand, seventy-three".