19519848473 has 2 divisors, whose sum is σ = 19519848474. Its totient is φ = 19519848472.

The previous prime is 19519848457. The next prime is 19519848497. The reversal of 19519848473 is 37484891591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13477584649 + 6042263824 = 116093^2 + 77732^2 .

It is a cyclic number.

It is not a de Polignac number, because 19519848473 - 2⁴ = 19519848457 is a prime.

It is not a weakly prime, because it can be changed into another prime (19519842473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9759924236 + 9759924237.

It is an arithmetic number, because the mean of its divisors is an integer number (9759924237).

Almost surely, 2^19519848473 is an apocalyptic number.

It is an amenable number.

19519848473 is a deficient number, since it is larger than the sum of its proper divisors (1).

19519848473 is an equidigital number, since it uses as much as digits as its factorization.

19519848473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 59.

The spelling of 19519848473 in words is "nineteen billion, five hundred nineteen million, eight hundred forty-eight thousand, four hundred seventy-three".