133940194 has 16 divisors (see below), whose sum is σ = 208134360. Its totient is φ = 64599040.

The previous prime is 133940173. The next prime is 133940203. The reversal of 133940194 is 491049331.

It can be written as a sum of positive squares in 4 ways, for example, as 21855625 + 112084569 = 4675^2 + 10587^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1879 + ... + 16474.

Almost surely, 2^133940194 is an apocalyptic number.

133940194 is a deficient number, since it is larger than the sum of its proper divisors (74194166).

133940194 is a wasteful number, since it uses less digits than its factorization.

133940194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18485.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 133940194 is about 11573.2533887408. The cubic root of 133940194 is about 511.6468537470.

The spelling of 133940194 in words is "one hundred thirty-three million, nine hundred forty thousand, one hundred ninety-four".