133541493 has 8 divisors (see below), whose sum is σ = 179818656. Its totient is φ = 88146000.

The previous prime is 133541467. The next prime is 133541497. The reversal of 133541493 is 394145331.

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 133541493 - 2¹⁷ = 133410421 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133541497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220063 + ... + 220668.

It is an arithmetic number, because the mean of its divisors is an integer number (22477332).

Almost surely, 2^133541493 is an apocalyptic number.

It is an amenable number.

133541493 is a deficient number, since it is larger than the sum of its proper divisors (46277163).

133541493 is a wasteful number, since it uses less digits than its factorization.

133541493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440835.

The product of its digits is 19440, while the sum is 33.

The square root of 133541493 is about 11556.0154465110. The cubic root of 133541493 is about 511.1386745567.

The spelling of 133541493 in words is "one hundred thirty-three million, five hundred forty-one thousand, four hundred ninety-three".