19430603947 has 2 divisors, whose sum is σ = 19430603948. Its totient is φ = 19430603946.

The previous prime is 19430603921. The next prime is 19430604031. The reversal of 19430603947 is 74930603491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19430603947 - 2²³ = 19422215339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19430603897 and 19430603906.

It is not a weakly prime, because it can be changed into another prime (19430603347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9715301973 + 9715301974.

It is an arithmetic number, because the mean of its divisors is an integer number (9715301974).

Almost surely, 2^19430603947 is an apocalyptic number.

19430603947 is a deficient number, since it is larger than the sum of its proper divisors (1).

19430603947 is an equidigital number, since it uses as much as digits as its factorization.

19430603947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 19430603947 in words is "nineteen billion, four hundred thirty million, six hundred three thousand, nine hundred forty-seven".