186408331228 has 12 divisors (see below), whose sum is σ = 372816662512. Its totient is φ = 79889284800.

The previous prime is 186408331217. The next prime is 186408331237. The reversal of 186408331228 is 822133804681.

186408331228 is an admirable number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 3328720173 + ... + 3328720228.

Almost surely, 2^186408331228 is an apocalyptic number.

It is an amenable number.

186408331228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

186408331228 is a wasteful number, since it uses less digits than its factorization.

186408331228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6657440412 (or 6657440410 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 186408331228 in words is "one hundred eighty-six billion, four hundred eight million, three hundred thirty-one thousand, two hundred twenty-eight".