133795181 has 8 divisors (see below), whose sum is σ = 146238624. Its totient is φ = 121659120.

The previous prime is 133795153. The next prime is 133795187. The reversal of 133795181 is 181597331.

133795181 = 1380² + 1381² + ... + 1446².

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

It is a cyclic number.

It is not a de Polignac number, because 133795181 - 2²⁶ = 66686317 is a prime.

It is a super-2 number, since 2×133795181² = 35802300917645522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133795187) 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, 75935 + ... + 77676.

It is an arithmetic number, because the mean of its divisors is an integer number (18279828).

Almost surely, 2^133795181 is an apocalyptic number.

It is an amenable number.

133795181 is a deficient number, since it is larger than the sum of its proper divisors (12443443).

133795181 is a wasteful number, since it uses less digits than its factorization.

133795181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153691.

The product of its digits is 22680, while the sum is 38.

The square root of 133795181 is about 11566.9866862550. The cubic root of 133795181 is about 511.4621388742.

The spelling of 133795181 in words is "one hundred thirty-three million, seven hundred ninety-five thousand, one hundred eighty-one".