188129064 has 32 divisors (see below), whose sum is σ = 474985440. Its totient is φ = 62088000.

The previous prime is 188129041. The next prime is 188129069. The reversal of 188129064 is 460921881.

It is not an unprimeable number, because it can be changed into a prime (188129069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36382 + ... + 41229.

It is an arithmetic number, because the mean of its divisors is an integer number (14843295).

Almost surely, 2^188129064 is an apocalyptic number.

It is an amenable number.

188129064 is an abundant number, since it is smaller than the sum of its proper divisors (286856376).

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

188129064 is a wasteful number, since it uses less digits than its factorization.

188129064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77721 (or 77717 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 188129064 is about 13716.0148731328. The cubic root of 188129064 is about 572.9964943485.

The spelling of 188129064 in words is "one hundred eighty-eight million, one hundred twenty-nine thousand, sixty-four".