17928389129 has 12 divisors (see below), whose sum is σ = 20883500736. Its totient is φ = 15077227152.

The previous prime is 17928389119. The next prime is 17928389131. The reversal of 17928389129 is 92198382971.

It is not a de Polignac number, because 17928389129 - 2⁸ = 17928388873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17928389119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436229 + ... + 475554.

It is an arithmetic number, because the mean of its divisors is an integer number (1740291728).

Almost surely, 2^17928389129 is an apocalyptic number.

It is an amenable number.

17928389129 is a deficient number, since it is larger than the sum of its proper divisors (2955111607).

17928389129 is an frugal number, since it uses more digits than its factorization.

17928389129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911896 (or 911843 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 59.

The spelling of 17928389129 in words is "seventeen billion, nine hundred twenty-eight million, three hundred eighty-nine thousand, one hundred twenty-nine".