133186564 has 12 divisors (see below), whose sum is σ = 266373184. Its totient is φ = 57079944.

The previous prime is 133186549. The next prime is 133186577. The reversal of 133186564 is 465681331.

133186564 is an admirable 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, 2378304 + ... + 2378359.

Almost surely, 2^133186564 is an apocalyptic number.

133186564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

133186564 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133186564 is a wasteful number, since it uses less digits than its factorization.

133186564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756674 (or 4756672 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 133186564 is about 11540.6483353406. The cubic root of 133186564 is about 510.6854348992.

The spelling of 133186564 in words is "one hundred thirty-three million, one hundred eighty-six thousand, five hundred sixty-four".