19003942693 has 2 divisors, whose sum is σ = 19003942694. Its totient is φ = 19003942692.

The previous prime is 19003942681. The next prime is 19003942739. The reversal of 19003942693 is 39624930091.

It is an a-pointer prime, because the next prime (19003942739) can be obtained adding 19003942693 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9781605604 + 9222337089 = 98902^2 + 96033^2 .

It is a cyclic number.

It is not a de Polignac number, because 19003942693 - 2²⁹ = 18467071781 is a prime.

It is a super-2 number, since 2×19003942693² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19003942603) 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, 9501971346 + 9501971347.

It is an arithmetic number, because the mean of its divisors is an integer number (9501971347).

Almost surely, 2^19003942693 is an apocalyptic number.

It is an amenable number.

19003942693 is a deficient number, since it is larger than the sum of its proper divisors (1).

19003942693 is an equidigital number, since it uses as much as digits as its factorization.

19003942693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 314928, while the sum is 46.

The spelling of 19003942693 in words is "nineteen billion, three million, nine hundred forty-two thousand, six hundred ninety-three".