30146189 has 4 divisors (see below), whose sum is σ = 30199740. Its totient is φ = 30092640.

The previous prime is 30146183. The next prime is 30146191. The reversal of 30146189 is 98164103.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20097289 + 10048900 = 4483^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 30146189 - 2⁸ = 30145933 is a prime.

It is a super-2 number, since 2×30146189² = 1817585422447442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30146183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25922 + ... + 27059.

It is an arithmetic number, because the mean of its divisors is an integer number (7549935).

Almost surely, 2^30146189 is an apocalyptic number.

It is an amenable number.

30146189 is a deficient number, since it is larger than the sum of its proper divisors (53551).

30146189 is an equidigital number, since it uses as much as digits as its factorization.

30146189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53550.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 30146189 is about 5490.5545257287. The cubic root of 30146189 is about 311.2271476693.

The spelling of 30146189 in words is "thirty million, one hundred forty-six thousand, one hundred eighty-nine".