188106681870 has 24 divisors (see below), whose sum is σ = 489077373096. Its totient is φ = 50161781808.

The previous prime is 188106681821. The next prime is 188106681877. The reversal of 188106681870 is 78186601881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188106681877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1045037032 + ... + 1045037211.

It is an arithmetic number, because the mean of its divisors is an integer number (20378223879).

Almost surely, 2^188106681870 is an apocalyptic number.

188106681870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188106681870 is an abundant number, since it is smaller than the sum of its proper divisors (300970691226).

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

188106681870 is a wasteful number, since it uses less digits than its factorization.

188106681870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090074256 (or 2090074253 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The spelling of 188106681870 in words is "one hundred eighty-eight billion, one hundred six million, six hundred eighty-one thousand, eight hundred seventy".