133657945 has 8 divisors (see below), whose sum is σ = 167363136. Its totient is φ = 102277296.

The previous prime is 133657933. The next prime is 133657981. The reversal of 133657945 is 549756331.

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 133657945 - 2¹¹ = 133655897 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 7 ways as a sum of consecutive naturals, for example, 581007 + ... + 581236.

It is an arithmetic number, because the mean of its divisors is an integer number (20920392).

Almost surely, 2^133657945 is an apocalyptic number.

It is an amenable number.

133657945 is a deficient number, since it is larger than the sum of its proper divisors (33705191).

133657945 is a wasteful number, since it uses less digits than its factorization.

133657945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162271.

The product of its digits is 340200, while the sum is 43.

The square root of 133657945 is about 11561.0529364760. The cubic root of 133657945 is about 511.2872072362.

The spelling of 133657945 in words is "one hundred thirty-three million, six hundred fifty-seven thousand, nine hundred forty-five".