133194445 has 16 divisors (see below), whose sum is σ = 169021440. Its totient is φ = 100598400.

The previous prime is 133194443. The next prime is 133194469. The reversal of 133194445 is 544491331.

It is not a de Polignac number, because 133194445 - 2¹ = 133194443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133194445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133194443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4125 + ... + 16834.

It is an arithmetic number, because the mean of its divisors is an integer number (10563840).

Almost surely, 2^133194445 is an apocalyptic number.

It is an amenable number.

133194445 is a deficient number, since it is larger than the sum of its proper divisors (35826995).

133194445 is a wasteful number, since it uses less digits than its factorization.

133194445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21036.

The product of its digits is 25920, while the sum is 34.

The square root of 133194445 is about 11540.9897755782. The cubic root of 133194445 is about 510.6955075682.

The spelling of 133194445 in words is "one hundred thirty-three million, one hundred ninety-four thousand, four hundred forty-five".