185030129 has 4 divisors (see below), whose sum is σ = 185074176. Its totient is φ = 184986084.

The previous prime is 185030123. The next prime is 185030149. The reversal of 185030129 is 921030581.

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: 921030581 = 701 ⋅1313881.

It is a cyclic number.

It is not a de Polignac number, because 185030129 - 2²⁴ = 168252913 is a prime.

It is a super-2 number, since 2×185030129² = 68472297275513282, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (185030123) 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, 14969 + ... + 24374.

It is an arithmetic number, because the mean of its divisors is an integer number (46268544).

Almost surely, 2^185030129 is an apocalyptic number.

It is an amenable number.

185030129 is a deficient number, since it is larger than the sum of its proper divisors (44047).

185030129 is an equidigital number, since it uses as much as digits as its factorization.

185030129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44046.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 185030129 is about 13602.5780277122. The cubic root of 185030129 is about 569.8328523958.

The spelling of 185030129 in words is "one hundred eighty-five million, thirty thousand, one hundred twenty-nine".