188134985 has 8 divisors (see below), whose sum is σ = 226833216. Its totient is φ = 149793840.

The previous prime is 188134951. The next prime is 188134987. The reversal of 188134985 is 589431881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 188134985 - 2¹² = 188130889 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 88109 + ... + 90218.

It is an arithmetic number, because the mean of its divisors is an integer number (28354152).

Almost surely, 2^188134985 is an apocalyptic number.

It is an amenable number.

188134985 is a deficient number, since it is larger than the sum of its proper divisors (38698231).

188134985 is a wasteful number, since it uses less digits than its factorization.

188134985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178543.

The product of its digits is 276480, while the sum is 47.

The square root of 188134985 is about 13716.2307140118. The cubic root of 188134985 is about 573.0025056059.

The spelling of 188134985 in words is "one hundred eighty-eight million, one hundred thirty-four thousand, nine hundred eighty-five".