188128612 has 24 divisors (see below), whose sum is σ = 385009856. Its totient is φ = 78751008.

The previous prime is 188128601. The next prime is 188128637. The reversal of 188128612 is 216821881.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76923 + ... + 79330.

Almost surely, 2^188128612 is an apocalyptic number.

It is an amenable number.

188128612 is an abundant number, since it is smaller than the sum of its proper divisors (196881244).

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

188128612 is a wasteful number, since it uses less digits than its factorization.

188128612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156307 (or 156305 counting only the distinct ones).

The product of its digits is 12288, while the sum is 37.

The square root of 188128612 is about 13715.9983960337. The cubic root of 188128612 is about 572.9960354532.

The spelling of 188128612 in words is "one hundred eighty-eight million, one hundred twenty-eight thousand, six hundred twelve".