186000424221 has 4 divisors (see below), whose sum is σ = 248000565632. Its totient is φ = 124000282812.

The previous prime is 186000424219. The next prime is 186000424231. The reversal of 186000424221 is 122424000681.

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: 122424000681 = 3 ⋅40808000227.

It is not a de Polignac number, because 186000424221 - 2¹ = 186000424219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (186000424231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31000070701 + ... + 31000070706.

It is an arithmetic number, because the mean of its divisors is an integer number (62000141408).

Almost surely, 2^186000424221 is an apocalyptic number.

It is an amenable number.

186000424221 is a deficient number, since it is larger than the sum of its proper divisors (62000141411).

186000424221 is an equidigital number, since it uses as much as digits as its factorization.

186000424221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62000141410.

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 186000424221 in words is "one hundred eighty-six billion, four hundred twenty-four thousand, two hundred twenty-one".