19230203243 has 4 divisors (see below), whose sum is σ = 19501051248. Its totient is φ = 18959355240.

The previous prime is 19230203231. The next prime is 19230203273. The reversal of 19230203243 is 34230203291.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19230203243 - 2¹⁰ = 19230202219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19230203273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135423896 + ... + 135424037.

It is an arithmetic number, because the mean of its divisors is an integer number (4875262812).

Almost surely, 2^19230203243 is an apocalyptic number.

19230203243 is a deficient number, since it is larger than the sum of its proper divisors (270848005).

19230203243 is an equidigital number, since it uses as much as digits as its factorization.

19230203243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270848004.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 19230203243 in words is "nineteen billion, two hundred thirty million, two hundred three thousand, two hundred forty-three".