19430242129 has 16 divisors (see below), whose sum is σ = 20028450816. Its totient is φ = 18840229200.

The previous prime is 19430242127. The next prime is 19430242147. The reversal of 19430242129 is 92124203491.

It is a cyclic number.

It is not a de Polignac number, because 19430242129 - 2¹ = 19430242127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19430242127) 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, 4252204 + ... + 4256770.

It is an arithmetic number, because the mean of its divisors is an integer number (1251778176).

Almost surely, 2^19430242129 is an apocalyptic number.

It is an amenable number.

19430242129 is a deficient number, since it is larger than the sum of its proper divisors (598208687).

19430242129 is a wasteful number, since it uses less digits than its factorization.

19430242129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5436.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 19430242129 in words is "nineteen billion, four hundred thirty million, two hundred forty-two thousand, one hundred twenty-nine".