188400250166 has 16 divisors (see below), whose sum is σ = 282977888256. Its totient is φ = 94074374376.

The previous prime is 188400250061. The next prime is 188400250193. The reversal of 188400250166 is 661052004881.

It is a super-2 number, since 2×188400250166² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 4640045 + ... + 4680471.

It is an arithmetic number, because the mean of its divisors is an integer number (17686118016).

Almost surely, 2^188400250166 is an apocalyptic number.

188400250166 is a deficient number, since it is larger than the sum of its proper divisors (94577638090).

188400250166 is a wasteful number, since it uses less digits than its factorization.

188400250166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43483.

The product of its (nonzero) digits is 92160, while the sum is 41.

The spelling of 188400250166 in words is "one hundred eighty-eight billion, four hundred million, two hundred fifty thousand, one hundred sixty-six".