133884845 has 4 divisors (see below), whose sum is σ = 160661820. Its totient is φ = 107107872.

The previous prime is 133884823. The next prime is 133884857. The reversal of 133884845 is 548488331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 548488331 = 67 ⋅8186393.

It can be written as a sum of positive squares in 2 ways, for example, as 35200489 + 98684356 = 5933^2 + 9934^2 .

It is a cyclic number.

It is not a de Polignac number, because 133884845 - 2¹⁰ = 133883821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133884796 and 133884805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13388480 + ... + 13388489.

It is an arithmetic number, because the mean of its divisors is an integer number (40165455).

Almost surely, 2^133884845 is an apocalyptic number.

It is an amenable number.

133884845 is a deficient number, since it is larger than the sum of its proper divisors (26776975).

133884845 is an equidigital number, since it uses as much as digits as its factorization.

133884845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26776974.

The product of its digits is 368640, while the sum is 44.

The square root of 133884845 is about 11570.8618952954. The cubic root of 133884845 is about 511.5763669559.

The spelling of 133884845 in words is "one hundred thirty-three million, eight hundred eighty-four thousand, eight hundred forty-five".