188494671881085 has 16 divisors (see below), whose sum is σ = 301596429606720. Its totient is φ = 100528840137600.

The previous prime is 188494671881081. The next prime is 188494671881099. The reversal of 188494671881085 is 580188176494881.

It is not a de Polignac number, because 188494671881085 - 2² = 188494671881081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 188494671881085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188494671881081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102276991 + ... + 104103660.

It is an arithmetic number, because the mean of its divisors is an integer number (18849776850420).

Almost surely, 2^{188494671881085} is an apocalyptic number.

188494671881085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

188494671881085 is a deficient number, since it is larger than the sum of its proper divisors (113101757725635).

188494671881085 is a wasteful number, since it uses less digits than its factorization.

188494671881085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206441548.

The product of its (nonzero) digits is 990904320, while the sum is 78.

The spelling of 188494671881085 in words is "one hundred eighty-eight trillion, four hundred ninety-four billion, six hundred seventy-one million, eight hundred eighty-one thousand, eighty-five".