19383304121 has 8 divisors (see below), whose sum is σ = 19435914120. Its totient is φ = 19330766208.

The previous prime is 19383304099. The next prime is 19383304123. The reversal of 19383304121 is 12140338391.

It can be written as a sum of positive squares in 4 ways, for example, as 6235471225 + 13147832896 = 78965^2 + 114664^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19383304121 - 2²⁶ = 19316195257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19383304123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543965 + ... + 578501.

It is an arithmetic number, because the mean of its divisors is an integer number (2429489265).

Almost surely, 2^19383304121 is an apocalyptic number.

It is an amenable number.

19383304121 is a deficient number, since it is larger than the sum of its proper divisors (52609999).

19383304121 is an equidigital number, since it uses as much as digits as its factorization.

19383304121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36043.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 19383304121 in words is "nineteen billion, three hundred eighty-three million, three hundred four thousand, one hundred twenty-one".