186005138884 has 12 divisors (see below), whose sum is σ = 325526097708. Its totient is φ = 92997682400.

The previous prime is 186005138857. The next prime is 186005138887. The reversal of 186005138884 is 488831500681.

186005138884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 161104298884 + 24900840000 = 401378^2 + 157800^2 .

It is a super-2 number, since 2×186005138884² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (186005138887) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1135447 + ... + 1288894.

It is an arithmetic number, because the mean of its divisors is an integer number (27127174809).

Almost surely, 2^186005138884 is an apocalyptic number.

It is an amenable number.

186005138884 is a deficient number, since it is larger than the sum of its proper divisors (139520958824).

186005138884 is a wasteful number, since it uses less digits than its factorization.

186005138884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443526 (or 2443524 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 52.

The spelling of 186005138884 in words is "one hundred eighty-six billion, five million, one hundred thirty-eight thousand, eight hundred eighty-four".