19287423329 has 16 divisors (see below), whose sum is σ = 20241142272. Its totient is φ = 18343615488.

The previous prime is 19287423313. The next prime is 19287423341. The reversal of 19287423329 is 92332478291.

It is a cyclic number.

It is not a de Polignac number, because 19287423329 - 2⁴ = 19287423313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19287423359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2976437 + ... + 2982909.

It is an arithmetic number, because the mean of its divisors is an integer number (1265071392).

Almost surely, 2^19287423329 is an apocalyptic number.

It is an amenable number.

19287423329 is a deficient number, since it is larger than the sum of its proper divisors (953718943).

19287423329 is a wasteful number, since it uses less digits than its factorization.

19287423329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7216.

The product of its digits is 1306368, while the sum is 50.

The spelling of 19287423329 in words is "nineteen billion, two hundred eighty-seven million, four hundred twenty-three thousand, three hundred twenty-nine".