133921695 has 16 divisors (see below), whose sum is σ = 214843392. Its totient is φ = 71235360.

The previous prime is 133921687. The next prime is 133921717. The reversal of 133921695 is 596129331.

It is not a de Polignac number, because 133921695 - 2³ = 133921687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5911 + ... + 17400.

It is an arithmetic number, because the mean of its divisors is an integer number (13427712).

Almost surely, 2^133921695 is an apocalyptic number.

133921695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

133921695 is a deficient number, since it is larger than the sum of its proper divisors (80921697).

133921695 is a wasteful number, since it uses less digits than its factorization.

133921695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23702.

The product of its digits is 43740, while the sum is 39.

The square root of 133921695 is about 11572.4541476733. The cubic root of 133921695 is about 511.6232974850.

The spelling of 133921695 in words is "one hundred thirty-three million, nine hundred twenty-one thousand, six hundred ninety-five".