188969135 has 8 divisors (see below), whose sum is σ = 226935456. Its totient is φ = 151060320.

The previous prime is 188969107. The next prime is 188969147. The reversal of 188969135 is 531969881.

It is a happy number.

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

It is not a de Polignac number, because 188969135 - 2⁶ = 188969071 is a prime.

It is a Duffinian number.

It is a congruent 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, 6779 + ... + 20588.

It is an arithmetic number, because the mean of its divisors is an integer number (28366932).

Almost surely, 2^188969135 is an apocalyptic number.

188969135 is a deficient number, since it is larger than the sum of its proper divisors (37966321).

188969135 is a wasteful number, since it uses less digits than its factorization.

188969135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28753.

The product of its digits is 466560, while the sum is 50.

The square root of 188969135 is about 13746.6044898368. The cubic root of 188969135 is about 573.8481136490.

The spelling of 188969135 in words is "one hundred eighty-eight million, nine hundred sixty-nine thousand, one hundred thirty-five".