18328298929 has 4 divisors (see below), whose sum is σ = 18718262784. Its totient is φ = 17938335076.

The previous prime is 18328298899. The next prime is 18328298939. The reversal of 18328298929 is 92989282381.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18328298929 - 2¹³ = 18328290737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18328298939) 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, 194981857 + ... + 194981950.

It is an arithmetic number, because the mean of its divisors is an integer number (4679565696).

Almost surely, 2^18328298929 is an apocalyptic number.

It is an amenable number.

18328298929 is a deficient number, since it is larger than the sum of its proper divisors (389963855).

18328298929 is an equidigital number, since it uses as much as digits as its factorization.

18328298929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389963854.

The product of its digits is 8957952, while the sum is 61.

The spelling of 18328298929 in words is "eighteen billion, three hundred twenty-eight million, two hundred ninety-eight thousand, nine hundred twenty-nine".