133858813 has 8 divisors (see below), whose sum is σ = 147144096. Its totient is φ = 120759600.

The previous prime is 133858811. The next prime is 133858841. The reversal of 133858813 is 318858331.

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 133858813 - 2¹ = 133858811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133858811) 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, 45006 + ... + 47887.

It is an arithmetic number, because the mean of its divisors is an integer number (18393012).

Almost surely, 2^133858813 is an apocalyptic number.

It is an amenable number.

133858813 is a deficient number, since it is larger than the sum of its proper divisors (13285283).

133858813 is a wasteful number, since it uses less digits than its factorization.

133858813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93035.

The product of its digits is 69120, while the sum is 40.

The square root of 133858813 is about 11569.7369460157. The cubic root of 133858813 is about 511.5432085622.

The spelling of 133858813 in words is "one hundred thirty-three million, eight hundred fifty-eight thousand, eight hundred thirteen".