19003942739 has 2 divisors, whose sum is σ = 19003942740. Its totient is φ = 19003942738.

The previous prime is 19003942693. The next prime is 19003942757. The reversal of 19003942739 is 93724930091.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19003942739 - 2²⁴ = 18987165523 is a prime.

It is a super-2 number, since 2×19003942739² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 19003942693 and 19003942702.

It is not a weakly prime, because it can be changed into another prime (19003942799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9501971369 + 9501971370.

It is an arithmetic number, because the mean of its divisors is an integer number (9501971370).

Almost surely, 2^19003942739 is an apocalyptic number.

19003942739 is a deficient number, since it is larger than the sum of its proper divisors (1).

19003942739 is an equidigital number, since it uses as much as digits as its factorization.

19003942739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 47.

The spelling of 19003942739 in words is "nineteen billion, three million, nine hundred forty-two thousand, seven hundred thirty-nine".