19036297442 has 6 divisors (see below), whose sum is σ = 28554738849. Its totient is φ = 9518051160.

The previous prime is 19036297411. The next prime is 19036297453. The reversal of 19036297442 is 24479263091.

It can be written as a sum of positive squares in 2 ways, for example, as 13612122241 + 5424175201 = 116671^2 + 73649^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=97561.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 146342 + ... + 243902.

Almost surely, 2^19036297442 is an apocalyptic number.

19036297442 is a deficient number, since it is larger than the sum of its proper divisors (9518441407).

19036297442 is an frugal number, since it uses more digits than its factorization.

19036297442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195124 (or 97563 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 19036297442 in words is "nineteen billion, thirty-six million, two hundred ninety-seven thousand, four hundred forty-two".