133858911 has 4 divisors (see below), whose sum is σ = 178478552. Its totient is φ = 89239272.

The previous prime is 133858877. The next prime is 133858913. The reversal of 133858911 is 119858331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119858331 = 3 ⋅39952777.

It is not a de Polignac number, because 133858911 - 2²¹ = 131761759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133858911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133858913) 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, 22309816 + ... + 22309821.

It is an arithmetic number, because the mean of its divisors is an integer number (44619638).

Almost surely, 2^133858911 is an apocalyptic number.

133858911 is a deficient number, since it is larger than the sum of its proper divisors (44619641).

133858911 is an equidigital number, since it uses as much as digits as its factorization.

133858911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44619640.

The product of its digits is 25920, while the sum is 39.

The square root of 133858911 is about 11569.7411812019. The cubic root of 133858911 is about 511.5433333983.

The spelling of 133858911 in words is "one hundred thirty-three million, eight hundred fifty-eight thousand, nine hundred eleven".