188140377894 has 32 divisors (see below), whose sum is σ = 430053152256. Its totient is φ = 53752143360.

The previous prime is 188140377881. The next prime is 188140377937. The reversal of 188140377894 is 498773041881.

188140377894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1100359 + ... + 1259789.

It is an arithmetic number, because the mean of its divisors is an integer number (13439161008).

Almost surely, 2^188140377894 is an apocalyptic number.

188140377894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

188140377894 is an abundant number, since it is smaller than the sum of its proper divisors (241912774362).

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

188140377894 is a wasteful number, since it uses less digits than its factorization.

188140377894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187540.

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 188140377894 in words is "one hundred eighty-eight billion, one hundred forty million, three hundred seventy-seven thousand, eight hundred ninety-four".