188134986 has 32 divisors (see below), whose sum is σ = 422835840. Its totient is φ = 55370304.

The previous prime is 188134951. The next prime is 188134987. The reversal of 188134986 is 689431881.

It is not an unprimeable number, because it can be changed into a prime (188134987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50641 + ... + 54228.

It is an arithmetic number, because the mean of its divisors is an integer number (13213620).

Almost surely, 2^188134986 is an apocalyptic number.

188134986 is an abundant number, since it is smaller than the sum of its proper divisors (234700854).

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

188134986 is a wasteful number, since it uses less digits than its factorization.

188134986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104910.

The product of its digits is 331776, while the sum is 48.

The square root of 188134986 is about 13716.2307504649. The cubic root of 188134986 is about 573.0025066211.

The spelling of 188134986 in words is "one hundred eighty-eight million, one hundred thirty-four thousand, nine hundred eighty-six".