133195109 has 4 divisors (see below), whose sum is σ = 133297260. Its totient is φ = 133092960.

The previous prime is 133195091. The next prime is 133195121. The reversal of 133195109 is 901591331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901591331 = 59 ⋅15281209.

It can be written as a sum of positive squares in 2 ways, for example, as 60996100 + 72199009 = 7810^2 + 8497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133195109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133195169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49094 + ... + 51735.

It is an arithmetic number, because the mean of its divisors is an integer number (33324315).

Almost surely, 2^133195109 is an apocalyptic number.

It is an amenable number.

133195109 is a deficient number, since it is larger than the sum of its proper divisors (102151).

133195109 is a wasteful number, since it uses less digits than its factorization.

133195109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102150.

The product of its (nonzero) digits is 3645, while the sum is 32.

The square root of 133195109 is about 11541.0185425724. The cubic root of 133195109 is about 510.6963562053.

The spelling of 133195109 in words is "one hundred thirty-three million, one hundred ninety-five thousand, one hundred nine".