133068389 has 4 divisors (see below), whose sum is σ = 135249900. Its totient is φ = 130886880.

The previous prime is 133068373. The next prime is 133068407. The reversal of 133068389 is 983860331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8008900 + 125059489 = 2830^2 + 11183^2 .

It is a cyclic number.

It is not a de Polignac number, because 133068389 - 2⁴ = 133068373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133068349) 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, 1090664 + ... + 1090785.

It is an arithmetic number, because the mean of its divisors is an integer number (33812475).

Almost surely, 2^133068389 is an apocalyptic number.

It is an amenable number.

133068389 is a deficient number, since it is larger than the sum of its proper divisors (2181511).

133068389 is an equidigital number, since it uses as much as digits as its factorization.

133068389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181510.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 133068389 is about 11535.5272527960. The cubic root of 133068389 is about 510.5343483140.

The spelling of 133068389 in words is "one hundred thirty-three million, sixty-eight thousand, three hundred eighty-nine".