19330105442 has 18 divisors (see below), whose sum is σ = 30806412033. Its totient is φ = 9094947232.

The previous prime is 19330105439. The next prime is 19330105477. The reversal of 19330105442 is 24450103391.

It can be written as a sum of positive squares in 2 ways, for example, as 17691394081 + 1638711361 = 133009^2 + 40481^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=98311.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19330105399 and 19330105408.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3339683 + ... + 3345465.

Almost surely, 2^19330105442 is an apocalyptic number.

19330105442 is a deficient number, since it is larger than the sum of its proper divisors (11476306591).

19330105442 is an frugal number, since it uses more digits than its factorization.

19330105442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11602 (or 5802 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

Multiplying 19330105442 by its sum of digits (32), we get a square (618563374144 = 786488²).

The spelling of 19330105442 in words is "nineteen billion, three hundred thirty million, one hundred five thousand, four hundred forty-two".