19530380473 has 2 divisors, whose sum is σ = 19530380474. Its totient is φ = 19530380472.

The previous prime is 19530380449. The next prime is 19530380543. The reversal of 19530380473 is 37408303591.

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., 18954956329 + 575424144 = 137677^2 + 23988^2 .

It is a cyclic number.

It is not a de Polignac number, because 19530380473 - 2²¹ = 19528283321 is a prime.

It is a super-2 number, since 2×19530380473² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19530780473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9765190236 + 9765190237.

It is an arithmetic number, because the mean of its divisors is an integer number (9765190237).

Almost surely, 2^19530380473 is an apocalyptic number.

It is an amenable number.

19530380473 is a deficient number, since it is larger than the sum of its proper divisors (1).

19530380473 is an equidigital number, since it uses as much as digits as its factorization.

19530380473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 19530380473 in words is "nineteen billion, five hundred thirty million, three hundred eighty thousand, four hundred seventy-three".