186383021842 has 16 divisors (see below), whose sum is σ = 286727713272. Its totient is φ = 90812423680.

The previous prime is 186383021821. The next prime is 186383021899. The reversal of 186383021842 is 248120383681.

186383021842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 431721²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 185863592161 + 519429681 = 431119^2 + 22791^2 .

It is a junction number, because it is equal to n+sod(n) for n = 186383021792 and 186383021801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1255843 + ... + 1396390.

Almost surely, 2^186383021842 is an apocalyptic number.

186383021842 is a deficient number, since it is larger than the sum of its proper divisors (100344691430).

186383021842 is a wasteful number, since it uses less digits than its factorization.

186383021842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653133.

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

The spelling of 186383021842 in words is "one hundred eighty-six billion, three hundred eighty-three million, twenty-one thousand, eight hundred forty-two".