184428129 has 4 divisors (see below), whose sum is σ = 245904176. Its totient is φ = 122952084.

The previous prime is 184428113. The next prime is 184428131. The reversal of 184428129 is 921824481.

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, and also an emirpimes, since its reverse is a distinct semiprime: 921824481 = 3 ⋅307274827.

It is not a de Polignac number, because 184428129 - 2⁴ = 184428113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (184428199) 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, 30738019 + ... + 30738024.

It is an arithmetic number, because the mean of its divisors is an integer number (61476044).

Almost surely, 2^184428129 is an apocalyptic number.

It is an amenable number.

184428129 is a deficient number, since it is larger than the sum of its proper divisors (61476047).

184428129 is an equidigital number, since it uses as much as digits as its factorization.

184428129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61476046.

The product of its digits is 36864, while the sum is 39.

The square root of 184428129 is about 13580.4318414401. The cubic root of 184428129 is about 569.2141926458.

The spelling of 184428129 in words is "one hundred eighty-four million, four hundred twenty-eight thousand, one hundred twenty-nine".