133189916 has 12 divisors (see below), whose sum is σ = 238041888. Its totient is φ = 65177952.

The previous prime is 133189897. The next prime is 133189921. The reversal of 133189916 is 619981331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354041 + ... + 354416.

It is an arithmetic number, because the mean of its divisors is an integer number (19836824).

Almost surely, 2^133189916 is an apocalyptic number.

It is an amenable number.

133189916 is a deficient number, since it is larger than the sum of its proper divisors (104851972).

133189916 is a wasteful number, since it uses less digits than its factorization.

133189916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708508 (or 708506 counting only the distinct ones).

The product of its digits is 34992, while the sum is 41.

The square root of 133189916 is about 11540.7935602367. The cubic root of 133189916 is about 510.6897191232.

The spelling of 133189916 in words is "one hundred thirty-three million, one hundred eighty-nine thousand, nine hundred sixteen".