133654385 has 4 divisors (see below), whose sum is σ = 160385268. Its totient is φ = 106923504.

The previous prime is 133654373. The next prime is 133654399. The reversal of 133654385 is 583456331.

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 28058209 + 105596176 = 5297^2 + 10276^2 .

It is a cyclic number.

It is not a de Polignac number, because 133654385 - 2⁴ = 133654369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13365434 + ... + 13365443.

It is an arithmetic number, because the mean of its divisors is an integer number (40096317).

Almost surely, 2^133654385 is an apocalyptic number.

It is an amenable number.

133654385 is a deficient number, since it is larger than the sum of its proper divisors (26730883).

133654385 is an equidigital number, since it uses as much as digits as its factorization.

133654385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26730882.

The product of its digits is 129600, while the sum is 38.

The square root of 133654385 is about 11560.8989702358. The cubic root of 133654385 is about 511.2826677914.

The spelling of 133654385 in words is "one hundred thirty-three million, six hundred fifty-four thousand, three hundred eighty-five".